Vulnerability database
Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.
1,930 results · page 3 of 39
Oct 20, 2026virtualenv is a tool for creating isolated virtual python environments.CVE-2026-113717 · Other software · pypa · reported by GitHubLow 2.3
virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, PipInvoke.get_pip_install_cmd() handles --seeder pip --download by calling get_wheel(download=False) and then allowing pip to consult the configured index, bypassing virtualenv's download_wheel() and verify_wheel_digest() path. When virtualenv's default-index PyPI digest comparison remains enabled, an index candidate matching the bundled package and version can therefore be selected without comparison to PyPI SHA-256 metadata. Explicit custom-index settings already opt out of that comparison and remain outside this verification-bypass claim; the demonstrated configuration used a non-PyPI index while leaving the index environment variables unset so the comparison policy remained active. This condition does not independently defeat TLS or establish control of the index response. This issue is fixed in version 21.14.9.
- Product
- virtualenv
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 20, 2026virtualenv is a tool for creating isolated virtual python environments.CVE-2026-113716 · Other software · pypa · reported by GitHubMedium 4.5
virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, the builtin creator calls ensure_dir() for executable, library, and package directories, and ensure_dir() accepts an existing symlink to a directory because exists() follows it. Interpreter creation, seed installation, and activation generation then write through the linked parent outside the requested destination when another local account prepared the tree and the invoking user can access the target. The --clear option removes the planted tree first, while ordinary creation reaches it; arbitrary attacker-selected output bytes are not established. This issue is fixed in version 21.14.9.
- Product
- virtualenv
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 20, 2026virtualenv is a tool for creating isolated virtual python environments.CVE-2026-113715 · Other software · pypa · reported by GitHubLow 2
virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, the stdlib venv creator reads generated pyvenv.cfg with str.splitlines() and merges parsed keys over virtualenv's selected configuration. An untrusted caller who influences the destination pathname can include a line-boundary character such as U+2028 to inject keys including home and include-system-site-packages, causing path data to change configuration structure before final output. Setting include-system-site-packages to true weakens environment isolation, while an altered home can change which standard-library files the interpreter loads if the attacker also controls that location. The builtin creator does not use this readback path. This issue is fixed in version 21.14.9.
- Product
- virtualenv
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 20, 2026virtualenv is a tool for creating isolated virtual python environments.CVE-2026-113714 · Other software · pypa · reported by GitHubLow 2.3
virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, download_wheel() writes package-index downloads directly into the reusable wheel/house cache before selecting a verification target from pip's textual Saved output. With default-index digest comparison enabled, a controlled package index can inject a misleading Saved line through a discarded link's data-requires-python attribute; this forged-line variant also requires knowledge of an absolute path to the genuine bundled wheel. The wrong path can then be hashed, while a digest mismatch leaves the rejected archive in the cache for later selection without verification. A separate rejected-cache-file variant requires control over downloaded data or archive selection but not the forged-line prerequisites. Explicit custom-index exceptions are outside the promised PyPI comparison, and the issue does not independently bypass TLS or establish control of default PyPI. This issue is fixed in version 21.14.9.
- Product
- virtualenv
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 20, 2026virtualenv is a tool for creating isolated virtual python environments.CVE-2026-113713 · Other software · pypa · reported by GitHubMedium 4.4
virtualenv is a tool for creating isolated virtual python environments. From 21.14.8 until 21.14.10, the app-data seeder can leave an environment linked to temporary package files that virtualenv deletes when creation finishes. The environment-variable and configuration-file forms of symlink_app_data can enable this state even though the command-line flag is disabled for temporary app-data. The resulting environment depends on a cache pathname that its owner no longer controls. This issue is fixed in version 21.14.10.
- Product
- virtualenv
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 20, 2026filelock is a platform-independent file lock for Python.CVE-2026-112941 · Other software · tox-dev · reported by GitHubLow 3.3
filelock is a platform-independent file lock for Python. From 4.1.0 until 4.2.1, SoftReadWriteLock and AsyncSoftReadWriteLock cache a successful check of the <path>.rw lock tree and resolve its names again during later record operations, allowing another local user who can replace that tree after the first acquisition to redirect lock-record writes into directories writable by the lock user. This issue is fixed in version 4.2.1.
- Product
- filelock
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 20, 2026filelock is a platform-independent file lock for Python.CVE-2026-112940 · Other software · tox-dev · reported by GitHubHigh 7.1
filelock is a platform-independent file lock for Python. From 3.20.4 until 4.2.1, ReadWriteLock let SQLite reopen the database and side files by name; on POSIX systems an attacker with rename access in a non-sticky parent can swap those names to cause overwrite or unlink operations, while a writable adjacent hot journal is additionally required for attacker-chosen content overwrites. This issue is fixed in version 4.2.1.
- Product
- filelock
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 20, 2026filelock is a platform-independent file lock for Python.CVE-2026-112939 · Other software · tox-dev · reported by GitHubMedium 4.7
filelock is a platform-independent file lock for Python. From 3.22.0 until 4.2.1, SoftFileLock can trust a forged process identifier in a marker that an attacker can modify but cannot remove, allowing an authorized contender such as another process of the holder's account or root to act as a confused deputy, remove the live marker, and admit another holder. This issue is fixed in version 4.2.1.
- Product
- filelock
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 20, 2026filelock is a platform-independent file lock for Python.CVE-2026-112937 · Other software · tox-dev · reported by GitHubMedium 6.1
filelock is a platform-independent file lock for Python. From 4.1.0 until 4.2.1, ReadWriteLock can remove a randomized .filelock-* private-hard-link directory during cleanup, allowing another local user with rename access in a non-sticky parent to observe a live name or forge a dead-owner sweep name and rename a sibling directory onto it for deletion. This issue is fixed in version 4.2.1.
- Product
- filelock
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 20, 2026filelock is a platform-independent file lock for Python.CVE-2026-112936 · Other software · tox-dev · reported by GitHubMedium 6.1
filelock is a platform-independent file lock for Python. From 3.20.4 until 4.0.9, ReadWriteLock and AsyncReadWriteLock versions from 3.20.4 resolve the lock path and pass it to SQLite without rejecting a final symbolic link, allowing another local user who can create names in the lock directory to redirect database creation and locking or split mutual exclusion between targets. This issue is fixed in version 4.0.9.
- Product
- filelock
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 20, 2026filelock is a platform-independent file lock for Python.CVE-2026-112935 · Other software · tox-dev · reported by GitHubMedium 4.7
filelock is a platform-independent file lock for Python. From 3.22.0 until 4.2.1, SoftFileLock can break a stale marker after an attacker frees its own marker following the stale read, an honest contender creates a live successor on the reused inode, and the successor's modification time is not newer than the saved observation, causing the live marker to be removed and two holders to be admitted. This issue is fixed in version 4.2.1.
- Product
- filelock
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 20, 2026filelock is a platform-independent file lock for Python.CVE-2026-112934 · Other software · tox-dev · reported by GitHubMedium 6.1
filelock is a platform-independent file lock for Python. From 4.0.0 until 4.2.1, SoftReadWriteLock refreshes holder records by name, allowing another local user with rename access to the lock directory to replace a record with a named pipe and stall the lock, or under a permissive hard-link policy to link a reachable target file and cause the lock user to write through it. This issue is fixed in version 4.2.1.
- Product
- filelock
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 20, 2026filelock is a platform-independent file lock for Python.CVE-2026-112915 · Other software · tox-dev · reported by GitHubMedium 5.5
filelock is a platform-independent file lock for Python. From 3.20.4 until 4.2.1, ReadWriteLock can open a crafted SQLite lock database without bounding schema and query work, allowing another local user who can replace the database to make acquisition stall or hang; versions from 3.20.4 expose this on initial per-instance opening, and versions from 3.30.0 repeat the exposure on every acquisition. This issue is fixed in version 4.2.1.
- Product
- filelock
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 20, 2026filelock is a platform-independent file lock for Python.CVE-2026-112914 · Other software · tox-dev · reported by GitHubMedium 5.3
filelock is a platform-independent file lock for Python. From 4.1.0 until 4.2.1, SoftFileLock can restore a stale marker by name after moving it aside, allowing another local user with rename access in a non-sticky lock directory to swap in a symbolic link and, on a runtime that follows the link and a same-filesystem target, make the lock user hard-link one of its files into the lock directory. This issue is fixed in version 4.2.1.
- Product
- filelock
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 20, 2026filelock is a platform-independent file lock for Python.CVE-2026-112912 · Other software · tox-dev · reported by GitHubLow 2.5
filelock is a platform-independent file lock for Python. From 3.32.6 until 4.2.1, SoftFileLock can follow a swapped symbolic link during the conditional os.access writability check for a node without its owner-write bit, allowing another local user on a platform and directory configuration that follows the link to infer whether a chosen path exists and is writable from the observable acquisition result. This issue is fixed in version 4.2.1.
- Product
- filelock
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 20, 2026filelock is a platform-independent file lock for Python.CVE-2026-112911 · Other software · tox-dev · reported by GitHubMedium 6.3
filelock is a platform-independent file lock for Python. From 3.30.0 until 4.2.1, StrictSoftFileLock versions from 3.30.0 and SoftReadWriteLock versions from 4.0.0 can adopt a protocol directory created first by another local user in a shared parent directory, allowing that user to alter protocol state and admit concurrent holders. This issue is fixed in version 4.2.1.
- Product
- filelock
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 20, 2026filelock is a platform-independent file lock for Python.CVE-2026-112909 · Other software · tox-dev · reported by GitHubMedium 6.1
filelock is a platform-independent file lock for Python. Prior to 4.2.1, UnixFileLock can truncate a regular file renamed onto the lock path when another local user has actual rename permission, or hard-linked there under a permissive hard-link policy; when an explicit mode is requested, affected versions from 3.10.2 can also change that file's mode. This issue is fixed in version 4.2.1.
- Product
- filelock
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 20, 2026filelock is a platform-independent file lock for Python.CVE-2026-112906 · Other software · tox-dev · reported by GitHubMedium 4.7
filelock is a platform-independent file lock for Python. From 4.1.0 until 4.2.1, SoftFileLock versions from 4.1.0 can reuse a stale observation when an attacker pre-dates and removes its own marker, at least two lock-user processes are waiting, coarse or matching modification times preserve the observation, and an honest contender creates a fresh marker on the reused inode, causing that live marker to be removed as stale. This issue is fixed in version 4.2.1.
- Product
- filelock
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026LangAlpha through 2026.09.07 contains an indirect prompt injection vulnerability that allows remote attackers to execute shell commands or Python by planting inCVE-2026-109440 · Other software · ginlix-ai · reported by VulnCheckHigh 8.7
LangAlpha through 2026.09.07 contains an indirect prompt injection vulnerability that allows remote attackers to execute shell commands or Python by planting instructions in web content retrieved by the agent. Because Bash and ExecuteCode lack an allow-list and human-in-the-loop approval, attackers can run code in the workspace sandbox and exfiltrate vault secrets from _internal/.vault_secrets.json.
- Product
- LangAlpha
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.comlasso.security
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112901 · Other software · python-pillow · reported by GitHubMedium 6.9
Pillow is a Python imaging library. Prior to 13.0.0, Pillow's XBM header parser is vulnerable to regular-expression denial of service. In XbmImageFile._open, when an application calls Image.open() on a small crafted XBM file, XbmImagePlugin applies a backtracking expression to the attacker-controlled header before image dimensions are accepted, stalling a worker for minutes and denying service. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112900 · Other software · python-pillow · reported by GitHubCritical 9.2
Pillow is a Python imaging library. From 2.6.0 until 13.0.0, Pillow is vulnerable to argument injection when invoking Ghostscript for EPS input. EpsImagePlugin.Ghostscript passes a caller-controlled input filename after -f without converting it to a safe absolute path, so a name beginning with a hyphen can be interpreted as a Ghostscript option. An attacker who controls the filename can inject Ghostscript arguments. Arbitrary command execution specifically requires a leading @ argument-file filename and control of the referenced text file containing additional Ghostscript arguments; the reported chain reproduces with the default -dSAFER invocation. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112898 · Other software · python-pillow · reported by GitHubMedium 6.9
Pillow is a Python imaging library. From 9.1.0 until 13.0.0, Pillow can disclose uninitialized stack memory when Image.quantize() uses an empty palette. ImagingPaletteCacheUpdate() leaves a local cache array uninitialized when the palette has zero entries, and the conversion path emits those bytes as output pixel indices. An attacker who controls the palette image can obtain stack contents from a returned PNG or GIF. This can disclose addresses and stack-canary data without an out-of-bounds access, memory corruption, or process crash. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112897 · Other software · python-pillow · reported by GitHubHigh 8.7
Pillow is a Python imaging library. From 5.3.0 until 13.0.0, Pillow can return uninitialized memory as pixels when libtiff performs a short decode of JPEG-compressed or Group 4 fax TIFF data. The _decodeStrip and _decodeTile buffers can be larger than the bytes written by libtiff, but Pillow converts the expected rows without clearing the unwritten tail. The tile path is affected from 5.3.0 and the strip path from 6.0.0. An attacker can supply a crafted TIFF to an application that loads and returns or re-encodes its pixels. This can disclose stale heap contents without memory corruption or a process crash. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112896 · Other software · python-pillow · reported by GitHubHigh 8.8
Pillow is a Python imaging library. Prior to 13.0.0, Pillow's TIFF encoder can read beyond a ColorMap buffer when retained TIFF metadata has a plane size inconsistent with BitsPerSample. A small TIFF can be opened normally and then retain a crafted ColorMap that is reused when the image is saved. An application that re-encodes the attacker's TIFF with libtiff can trigger the out-of-bounds read. This can disclose heap memory in the output or crash the process. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112895 · Other software · python-pillow · reported by GitHubHigh 8.7
Pillow is a Python imaging library. From 5.1.0 until 13.0.0, Pillow can exhaust resources while parsing an existing PDF during an append operation. PdfParser follows page-tree child references without cycle or duplication tracking and follows previous-trailer chains with only an exact repeated-offset guard, so deep or cyclic page trees and long chains of unique trailer offsets can exhaust the Python stack. Repeated non-cyclic /Kids references can also cause super-linear CPU and memory use. An attacker can supply such a PDF to an application that calls Image.save with PDF append enabled. This can raise an uncaught RecursionError or consume excessive CPU and memory before output is written, causing denial of service. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112894 · Other software · python-pillow · reported by GitHubHigh 8.7
Pillow is a Python imaging library. From 5.1.0 until 13.0.0, Pillow takes quadratic time to reserve PDF object identifiers when saving many frames with save_all enabled. PdfParser.next_object_id() repeatedly rebuilds and scans all previously reserved identifiers for every object. An attacker can supply a multi-frame image, including a small APNG with a large declared frame count, to an application that converts it to a multipage PDF. This can consume excessive CPU and deny service. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112893 · Other software · python-pillow · reported by GitHubHigh 8.2
Pillow is a Python imaging library. From 10.0.0 until 13.0.0, Pillow can free an invalid glyph pointer during FreeType rendering with an active stroker. If FT_Load_Glyph fails, cleanup may call FT_Done_Glyph on an uninitialized or stale glyph variable. An attacker can supply a malformed font as untrusted bytes to an application that draws text with a nonzero stroke width, forcing the glyph-load failure path. This can corrupt memory or crash the process. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112892 · Other software · python-pillow · reported by GitHubHigh 8.7
Pillow is a Python imaging library. From 4.1.0 until 13.0.0, Pillow's MSP RLE decoder can expand a small file into an unbounded in-memory buffer. The decoder writes run-length output to BytesIO without limiting expansion to the declared image size. An attacker can supply a crafted MSP image to an application that loads its pixels. This can exhaust memory and deny service even when the declared pixel count passes the decompression-bomb check. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112891 · Other software · python-pillow · reported by GitHubMedium 6.9
Pillow is a Python imaging library. From 9.2.0 until 13.0.0, Pillow performs quadratic copying when saving a GIF with a long comment. _get_global_header() repeatedly copies portions of comment data while assembling the global header, including comments retained from an untrusted input image. An attacker can supply an image with a large GIF comment to an application that saves it as GIF. This can consume excessive CPU and delay or deny service. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112406 · Other software · python-pillow · reported by GitHubHigh 8.7
Pillow is a Python imaging library. From 5.1.0 until 13.0.0, Pillow can enter an infinite loop while rewriting PDF pages. PdfParser.rewrite_pages() follows Parent relationships without detecting a cycle in the page tree. An attacker can supply a cyclic PDF to an application that appends an image to that PDF. This can hold the worker at full CPU and deny service. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112405 · Other software · python-pillow · reported by GitHubHigh 8.7
Pillow is a Python imaging library. From 12.0.0 until 13.0.0, Pillow's Image.merge() can dereference a null image8 plane. Validation skips the first input band, allowing a 32-bit integer or floating-point image backed by image32 storage to be merged as a narrower multiband image. A crafted IPTC file can reach this path when an application opens and loads it, or a caller can invoke Image.merge() directly with such a first band. This causes a native process crash. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112404 · Other software · python-pillow · reported by GitHubHigh 8.8
Pillow is a Python imaging library. From 8.1.0 until 13.0.0, Pillow's TIFF tile and RGBA decode paths can read beyond row data produced by libtiff. In _decodeTile and the RGBA unpacker path, when Pillow and libtiff interpret duplicated PhotometricInterpretation or BitsPerSample tags differently, Pillow does not verify that the required input row fits inside the row libtiff produced, while the strip path has this validation. Loading pixels from such a crafted TIFF can expose adjacent heap data in output pixels or crash the process. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112403 · Other software · python-pillow · reported by GitHubCritical 9.2
Pillow is a Python imaging library. Prior to 13.0.0, Pillow's JPEG decoder can write a full-width scanline into a buffer sized for a requested draft scale. ImagingJpegDecode does not verify libjpeg's actual output width and component count after scaling is requested, and an 8-bit lossless SOF3 JPEG decoded by a build linked to libjpeg-turbo 3.x can ignore the requested downscaling geometry. An attacker can supply such a JPEG to an application that uses draft() or thumbnail() to request downscaling. This can corrupt heap memory, crash the process, or potentially allow code execution. Older libjpeg-turbo 2.x and IJG builds reject the SOF3 input. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112402 · Other software · python-pillow · reported by GitHubHigh 8.7
Pillow is a Python imaging library. Prior to 13.0.0, Pillow can double free image memory when ImagingScaleAffine encounters a selective allocation failure. The affected fast path handles Transform.EXTENT or pure scale-and-translate Transform.AFFINE operations with the default NEAREST resampling. The output image allocation must succeed while the additional per-column lookup allocation fails, after which the error path deletes image storage that later cleanup releases again. An attacker who can drive such a large Image.transform() operation under memory pressure may trigger the failure. This can crash the process and may corrupt memory. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112401 · Other software · python-pillow · reported by GitHubMedium 6.9
Pillow is a Python imaging library. From 5.4.0 until 13.0.0, Pillow performs quadratic copying while parsing GIF comments. GifImageFile._seek() repeatedly appends immutable bytes for comment sub-blocks and multiple comment extensions, and frame zero is parsed during Image.open(). An attacker can submit a small-dimension GIF containing many comment extensions to any application that opens the file. This can consume excessive CPU and deny service before the application can inspect the image. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112400 · Other software · python-pillow · reported by GitHubHigh 8.7
Pillow is a Python imaging library. From 9.2.0 until 13.0.0, Pillow can retain a rejected GIF frame size after a decompression-bomb exception. In GifImageFile._seek, a crafted GIF can leave rejected dimensions stored after Image.DecompressionBombError; if an application catches that exception and continues processing the same image object, later seek or load operations allocate according to those dimensions and can exhaust memory, denying service. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112399 · Other software · python-pillow · reported by GitHubHigh 8.7
Pillow is a Python imaging library. From 8.1.0 until 13.0.0, Pillow can allocate an APNG disposal background at the full canvas size before applying the decompression-bomb check. A crafted APNG with a small first frame, a very large declared canvas, and background disposal or first-frame OP_PREVIOUS reaches PngImageFile._seek while Image.open() positions frame zero. The full-canvas allocation occurs inside Image.open() without requiring pixel loading or frame iteration. This can exhaust memory and deny service. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112398 · Other software · python-pillow · reported by GitHubCritical 9.2
Pillow is a Python imaging library. Prior to 13.0.0, Pillow's FlashPix JPEG-tile decoder can write decoded scanlines beyond the allocated tile buffer. FlashPix (FPX) JPEG decoding selects raw mode LA with two bytes per pixel, while an unrecognized JPEG mode can be decoded as JCS_UNKNOWN with four components, causing ImagingJpegDecode to write four-component scanlines into the two-byte tile buffer. An attacker can supply a crafted OLE2 FlashPix file to an application with the optional olefile dependency installed that opens or thumbnails untrusted input. This can corrupt heap memory and may allow arbitrary code execution. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112397 · Other software · python-pillow · reported by GitHubHigh 8.7
Pillow is a Python imaging library. Prior to 13.0.0, Pillow's ImageMorph.MorphOp.apply() can access memory before a row buffer for a zero-width image. PPM and PGM input can create an image with width zero, and the native morphology routine indexes outrow[width - 1] without rejecting that geometry. An attacker can supply such an image to an application that applies a morphology operation. This can crash the process. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112396 · Other software · python-pillow · reported by GitHubMedium 5.9
Pillow is a Python imaging library. From 11.3.0 until 13.0.0, Pillow has a heap use-after-free when libtiff rejects a tag while encoding TIFF data to an in-memory buffer. When an application saves attacker-influenced TIFF tags to BytesIO, libtiff can reject a tag during encoding in ImagingLibTiffEncode; the error path then frees the output buffer without closing or clearing the TIFF handle, and later cleanup flushes through the write callback into freed memory, which can crash the process and may enable code execution. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112392 · Other software · python-pillow · reported by GitHubHigh 8.2
Pillow is a Python imaging library. Prior to 13.0.0, Pillow's rank-based filters can dereference invalid image storage for a zero-size image. ImagingExpand() allocates a non-empty output and then faults while replicating edges by reading the first pixel from empty input storage; ImagingRankFilter is never reached. An attacker can supply or cause creation of a zero-size image to an application that applies a rank, median, minimum, or maximum filter. This causes a native process crash. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112395 · Other software · python-pillow · reported by GitHubMedium 6.5
Pillow is a Python imaging library. From 8.2.0 until 13.0.0, Pillow's tiled-TIFF decoder can read past the tile buffer while copying four-byte pixels. In _decodeTile, libtiff can return a tile allocation smaller than the required row stride multiplied by the tile length, and Pillow's stride-and-copy loop walks beyond that allocation. An attacker can supply a crafted tiled TIFF to an application that loads it. This can expose adjacent heap data in pixels or crash the process. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112394 · Other software · python-pillow · reported by GitHubMedium 6.3
Pillow is a Python imaging library. Prior to 13.0.0, Pillow's P;2L and P;4L raw decoders can read past the end of an input buffer. ImagingRawDecode calculates a packed-pixel row size, while the unpackers read separately padded bit planes. A caller can supply a buffer and image dimensions whose accepted size is smaller than the unpacker's actual footprint. This can disclose up to three adjacent heap bytes in output pixels or crash the process. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112393 · Other software · python-pillow · reported by GitHubCritical 9.2
Pillow is a Python imaging library. From 2.0.0 until 13.0.0, Pillow has a heap buffer overflow and stale-heap disclosure in _tiffWriteProc when saving compressed TIFF data through libtiff to a target without a usable fileno(), such as BytesIO. The callback sizes its allocation from the prior buffer size instead of the current write position, allowing an attacker-controlled out-of-line TIFF tag or retained ICC profile to be copied beyond the allocation after libtiff seeks forward. This overflow can crash the process and may allow code execution. Independently, unwritten alignment gaps in compressed TIFF output larger than 64 KiB can disclose stale heap bytes without a crafted tag. File paths and targets with real file descriptors are unaffected. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112391 · Other software · python-pillow · reported by GitHubMedium 6.3
Pillow is a Python imaging library. From 5.1.0 until 13.0.0, Pillow's PdfParser.get_value() can recurse without a limit while reading nested PDF objects. The parser follows attacker-controlled arrays and dictionaries when an existing PDF is opened for append. An attacker can provide a deeply nested PDF to an application that saves an image with PDF append enabled. This can raise an uncaught RecursionError or terminate the worker, causing denial of service. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026Pillow is a Python imaging library.CVE-2026-112390 · Other software · python-pillow · reported by GitHubHigh 8.2
Pillow is a Python imaging library. From 7.2.0 until 13.0.0, Pillow can enter an infinite loop while determining the frame count of a MIC image. MicImageFile inherits TIFF frame traversal, but MicImageFile.tell reports the OLE stream index and its seek() resets TIFF frame state, so an embedded TIFF with at least three IFDs never advances. When an application with olefile installed reads n_frames or saves all frames from a crafted MIC file, the non-advancing traversal can hold a worker at full CPU indefinitely. This issue is fixed in version 13.0.0.
- Product
- Pillow
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python.CVE-2026-111750 · Other software · aio-libs · reported by GitHubMedium 6.3
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, the pure Python parser accepts ambiguous HTTP request framing. An unauthenticated attacker can consequently smuggle requests when an application uses AIOHTTP_NO_EXTENSIONS or otherwise runs without a standard wheel and an intermediary interprets the framing differently. This issue is fixed in version 3.14.4.
- Product
- aiohttp
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python.CVE-2026-111749 · Other software · aio-libs · reported by GitHubLow 2.3
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, Host-Only scope on an existing parent-domain cookie can be removed by a subdomain. A user who accesses an untrusted subdomain can consequently have host-only protections stripped from cookies, although impact is limited when applications do not reflect those cookies to a browser. This issue is fixed in version 3.14.4.
- Product
- aiohttp
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python.CVE-2026-111748 · Other software · aio-libs · reported by GitHubMedium 6.3
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, an attacker can send an absolute-form request that causes Request.scheme to use attacker-controlled request-target scheme data instead of the connection protocol. Applications that use Request.scheme for security decisions can consequently be tricked into treating an unencrypted connection as encrypted or an encrypted connection as unencrypted. This issue is fixed in version 3.14.4.
- Product
- aiohttp
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python.CVE-2026-111066 · Other software · aio-libs · reported by GitHubHigh 8.2
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. From 2.0.0 until 3.14.4, multipart request processing can retain an unbounded number of open file descriptors. An unauthenticated attacker can consequently exhaust file descriptors with specially crafted multipart requests when a handler uses Request.post(). This issue is fixed in version 3.14.4.
- Product
- aiohttp
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.
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