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.
19 results
Jul 1, 2026Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation AbuseFilter.CVE-2026-58027 · Other software · Wikimedia Foundation · reported by c4f26cc8-17ff-4c99-b5e2-38fc1793eaccMedium 5.3
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation AbuseFilter. This vulnerability is associated with program files includes/Api/QueryAbuseFilters.Php. This issue affects AbuseFilter: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.
- Product
- AbuseFilter
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordphabricator.wikimedia.org
May 11, 2026Vulnerability in Wikimedia Foundation AbuseFilter.CVE-2026-34086 · Other software · Wikimedia Foundation · reported by c4f26cc8-17ff-4c99-b5e2-38fc1793eaccLow 2.1
Vulnerability in Wikimedia Foundation AbuseFilter. This issue affects AbuseFilter: from * before 1.43.7, 1.44.4, 1.45.2.
- Product
- AbuseFilter
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordphabricator.wikimedia.org
Feb 2, 2026Vulnerability in Wikimedia Foundation AbuseFilter.CVE-2025-6592 · Other software · Wikimedia Foundation · reported by c4f26cc8-17ff-4c99-b5e2-38fc1793eaccLow 2.1
Vulnerability in Wikimedia Foundation AbuseFilter. This vulnerability is associated with program files includes/auth/AuthManager.Php. This issue affects AbuseFilter: from fe0b1cb9e9691faf4d8d9bd80646589f6ec37615 before 1.43.2, 1.44.0.
- Product
- AbuseFilter
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordphabricator.wikimedia.org
Jul 7, 2025Missing Authorization vulnerability in Wikimedia Foundation Mediawiki - AbuseFilter Extension allows Unauthorized Access.This issue affects Mediawiki - AbuseFilCVE-2025-53499 · Other software · Wikimedia Foundation · reported by c4f26cc8-17ff-4c99-b5e2-38fc1793eaccCritical 9.1
Missing Authorization vulnerability in Wikimedia Foundation Mediawiki - AbuseFilter Extension allows Unauthorized Access.This issue affects Mediawiki - AbuseFilter Extension: from 1.43.X before 1.43.2.
- Product
- Mediawiki - AbuseFilter Extension
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgerrit.wikimedia.orgphabricator.wikimedia.org
Jul 7, 2025Insufficient Logging vulnerability in Wikimedia Foundation Mediawiki - AbuseFilter Extension allows Data Leakage Attacks.This issue affects Mediawiki - AbuseFilCVE-2025-53498 · Other software · Wikimedia Foundation · reported by c4f26cc8-17ff-4c99-b5e2-38fc1793eaccMedium 5.3
Insufficient Logging vulnerability in Wikimedia Foundation Mediawiki - AbuseFilter Extension allows Data Leakage Attacks.This issue affects Mediawiki - AbuseFilter Extension: from 1.43.X before 1.43.2.
- Product
- Mediawiki - AbuseFilter Extension
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgerrit.wikimedia.orgphabricator.wikimedia.org
Jul 7, 2025Missing Authorization vulnerability in Wikimedia Foundation Mediawiki - AbuseFilter Extension allows Unauthorized Access.This issue affects Mediawiki - AbuseFilCVE-2025-53495 · Other software · Wikimedia Foundation · reported by c4f26cc8-17ff-4c99-b5e2-38fc1793eaccCritical 9.1
Missing Authorization vulnerability in Wikimedia Foundation Mediawiki - AbuseFilter Extension allows Unauthorized Access.This issue affects Mediawiki - AbuseFilter Extension: from 1.43.X before 1.43.2.
- Product
- Mediawiki - AbuseFilter Extension
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgerrit.wikimedia.orgphabricator.wikimedia.org
Apr 10, 2025Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation AbuseFilter.CVE-2025-32700 · Other software · Wikimedia Foundation · reported by c4f26cc8-17ff-4c99-b5e2-38fc1793eaccLow 2.3
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation AbuseFilter. This vulnerability is associated with program files includes/Api/QueryAbuseLog.Php, includes/Pager/AbuseLogPager.Php, includes/Special/SpecialAbuseLog.Php, includes/View/AbuseFilterViewExamine.Php. This issue affects AbuseFilter: from >= 1.43.0 before 1.43.1.
- Product
- MediaWiki
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordphabricator.wikimedia.org
Oct 4, 2024An issue was discovered in the AbuseFilter extension for MediaWiki before 1.39.9, 1.40.x and 1.41.x before 1.41.3, and 1.42.x before 1.42.2.CVE-2024-47913 · Other software · Mediawiki · reported by MITREMedium 5.3
An issue was discovered in the AbuseFilter extension for MediaWiki before 1.39.9, 1.40.x and 1.41.x before 1.41.3, and 1.42.x before 1.42.2. An API caller can match a filter condition against AbuseFilter logs even if the caller is not authorized to view the log details for the filter.
- Product
- Mediawiki
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgerrit.wikimedia.orgphabricator.wikimedia.org
Jul 2, 2021An issue was discovered in the AbuseFilter extension in MediaWiki through 1.36.CVE-2021-36126 · Other software · Mediawiki · reported by MITRECritical 9.8
An issue was discovered in the AbuseFilter extension in MediaWiki through 1.36. If the MediaWiki:Abusefilter-blocker message is invalid within the content language, the filter user falls back to the English version, but that English version could also be invalid on a wiki. This would result in a fatal error, and potentially fail to block or restrict a potentially nefarious user.
- Product
- Mediawiki
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgerrit.wikimedia.orgphabricator.wikimedia.org
Apr 21, 2021An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2.CVE-2021-31554 · Other software · Mediawiki · reported by MITREMedium 5.4
An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. It improperly handled account blocks for certain automatically created MediaWiki user accounts, thus allowing nefarious users to remain unblocked.
- Product
- Mediawiki
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgerrit.wikimedia.orgphabricator.wikimedia.org
Apr 21, 2021An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2.CVE-2021-31552 · Other software · Mediawiki · reported by MITREMedium 5.4
An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. It incorrectly executed certain rules related to blocking accounts after account creation. Such rules would allow for user accounts to be created while blocking only the IP address used to create an account (and not the user account itself). Such rules could also be used by a nefarious, unprivileged user to catalog and enumerate any number of IP addresses related to these account creations.
- Product
- Mediawiki
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgerrit.wikimedia.orgphabricator.wikimedia.org
Apr 21, 2021An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2.CVE-2021-31549 · Other software · Mediawiki · reported by MITREMedium 4.3
An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. The Special:AbuseFilter/examine form allowed for the disclosure of suppressed MediaWiki usernames to unprivileged users.
- Product
- Mediawiki
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgerrit.wikimedia.orggerrit.wikimedia.org
Apr 21, 2021An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2.CVE-2021-31548 · Other software · Mediawiki · reported by MITREMedium 6.5
An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. A MediaWiki user who is partially blocked or was unsuccessfully blocked could bypass AbuseFilter and have their edits completed.
- Product
- Mediawiki
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgerrit.wikimedia.orgphabricator.wikimedia.org
Apr 21, 2021An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2.CVE-2021-31547 · Other software · Mediawiki · reported by MITREMedium 4.3
An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. Its AbuseFilterCheckMatch API reveals suppressed edits and usernames to unprivileged users through the iteration of crafted AbuseFilter rules.
- Product
- Mediawiki
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgerrit.wikimedia.orggerrit.wikimedia.org
Apr 21, 2021An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2.CVE-2021-31546 · Other software · Mediawiki · reported by MITREMedium 4.3
An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. It incorrectly logged sensitive suppression deletions, which should not have been visible to users with access to view AbuseFilter log data.
- Product
- Mediawiki
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgerrit.wikimedia.orgphabricator.wikimedia.org
Apr 21, 2021An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2.CVE-2021-31545 · Other software · Mediawiki · reported by MITREMedium 5.3
An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. The page_recent_contributors leaked the existence of certain deleted MediaWiki usernames, related to rev_deleted.
- Product
- Mediawiki
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgerrit.wikimedia.orgphabricator.wikimedia.org
Mar 20, 2020An issue was discovered in the AbuseFilter extension for MediaWiki.CVE-2019-16528 · Other software · Mediawiki · reported by MITREHigh 7.5
An issue was discovered in the AbuseFilter extension for MediaWiki. includes/special/SpecialAbuseLog.php allows attackers to obtain sensitive information, such as deleted/suppressed usernames and summaries, from AbuseLog revision data. This affects REL1_32 and REL1_33.
- Product
- Abusefilter
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgerrit.wikimedia.orggerrit.wikimedia.org
Nov 15, 2019An issue was discovered in the AbuseFilter extension through 1.34 for MediaWiki.CVE-2019-18987 · Other software · Mediawiki · reported by MITREMedium 5.3
An issue was discovered in the AbuseFilter extension through 1.34 for MediaWiki. Once a specific abuse filter has (accidentally or otherwise) been made public, its previous versions can be exposed, thus potentially disclosing private or sensitive information within the filter's definition.
- Product
- Abusefilter
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgerrit.wikimedia.orgphabricator.wikimedia.org
Oct 29, 2019An issue was discovered in the AbuseFilter extension through 1.34 for MediaWiki.CVE-2019-18612 · Other software · Mediawiki · reported by MITREMedium 5.3
An issue was discovered in the AbuseFilter extension through 1.34 for MediaWiki. Previously hidden (restricted) AbuseFilter filters were viewable (or their differences were viewable) to unprivileged users, thus disclosing potentially sensitive information.
- Product
- Abusefilter
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgerrit.wikimedia.orgphabricator.wikimedia.org
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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