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.
26 results
Oct 28, 2026russh is a Rust SSH client and server library that includes an SSH agent protocol implementation.CVE-2026-116794 · Other software · Eugeny · reported by GitHubHigh 8.3
russh is a Rust SSH client and server library that includes an SSH agent protocol implementation. From 0.50.0-beta.12 until 0.65.0, the agent server's Connection::try_sign path in russh/src/keys/agent/server.rs recognizes SSH_AGENT_CONSTRAIN_CONFIRM but returns a hard-coded successful result instead of calling Agent::confirm. In applications that override Agent::confirm to require user approval or another policy check, a process that can reach the agent socket, including the remote side of a forwarded agent, can use a key added through ssh-add -c without that check and can authenticate or sign data as the user while the key remains loaded. The separate Agent::confirm_request hook still runs for every signing request, so checks implemented there remain effective, and implementations that retain the default always-successful Agent::confirm do not lose an approval check through this regression. This issue is fixed in version 0.65.0.
- Product
- russh
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 27, 2026pageant provides a PageantStream type that implements AsyncRead and AsyncWrite traits and can be used to communicate with a running Pageant instance.CVE-2026-116775 · Other software · Eugeny · reported by GitHubLow 2.3
pageant provides a PageantStream type that implements AsyncRead and AsyncWrite traits and can be used to communicate with a running Pageant instance. From 0.2.0 until 0.2.5, PageantStream::new in pageant/src/wmmessage.rs trusts a peer-controlled four-byte length prefix and buffers until len + 4 bytes are available without checking the fixed _AGENT_MAX_MSGLEN transport capacity. An application that bridges an SSH forwarded-agent channel to the raw stream can allow a malicious server to force large allocations or retain a partially filled frame, causing client memory exhaustion. This issue is fixed in version 0.2.5.
- Product
- russh
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 27, 2026russh is a Rust SSH client and server library that includes an SSH agent protocol implementation.CVE-2026-116774 · Other software · Eugeny · reported by GitHubMedium 4.3
russh is a Rust SSH client and server library that includes an SSH agent protocol implementation. From 0.60.0 until 0.65.0, channel-open parsing accepts a peer-declared maximum_packet_size of zero and passes it into ChannelTx::poll_writable in russh/src/channels/io/tx.rs. The Channel::data, Channel::make_writer, and Channel::into_stream asynchronous write paths then calculate a writable size of zero and remain pending forever because window adjustments cannot satisfy a static zero packet maximum. An authenticated client can strand server writes, and a malicious server can strand client writes, allowing affected tasks, channels, and connections to accumulate without surfacing an error. This issue is fixed in version 0.65.0.
- Product
- russh
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 27, 2026russh is a Rust SSH client and server library that includes an SSH agent protocol implementation.CVE-2026-116773 · Other software · Eugeny · reported by GitHubMedium 4.3
russh is a Rust SSH client and server library that includes an SSH agent protocol implementation. Prior to 0.65.0, the client Session::process_packet path in russh/src/client/encrypted.rs accepts repeated packets encoded with russh's private msg::EXT_INFO = 7 before authentication, while the standards-compliant EXT_INFO message number 82 does not reach the affected handler. The handle_ext_info function appends every parsed extension name to received_extensions without clearing, deduplicating, or bounding the vector. A malicious SSH server that deliberately sends private message number 7 can therefore retain an unbounded number of attacker-controlled extension names for the session lifetime, causing progressive client memory exhaustion. This issue is fixed in version 0.65.0.
- Product
- russh
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 27, 2026russh is a Rust SSH client and server library that includes an SSH agent protocol implementation.CVE-2026-116696 · Other software · Eugeny · reported by GitHubLow 3.3
russh is a Rust SSH client and server library that includes an SSH agent protocol implementation. Prior to 0.65.0, russh::keys::agent::server::serve in russh/src/keys/agent/server.rs accepts repeated SSH_AGENT_CONSTRAIN_CONFIRM records while adding a key and appends every Constraint::Confirm record to the key's retained constraint vector without a count or memory limit. A process that can connect to the agent socket, including the remote side of a forwarded agent session, can repeatedly add constrained keys and cause renewable memory growth that persists for the process lifetime because keys without a lifetime constraint do not expire. This issue is fixed in version 0.65.0.
- Product
- russh
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 19, 2026russh is a Rust SSH client and server library that includes an SSH agent protocol implementation.CVE-2026-111061 · Other software · Eugeny · reported by GitHubMedium 4.3
russh is a Rust SSH client and server library that includes an SSH agent protocol implementation. Prior to 0.64.1, the agent server spawns a separate long-lived task for every SSH_AGENT_CONSTRAIN_LIFETIME record in a constrained add-key request. The loop accepts repeated lifetime records, clones the key blob into each task, and does not roll back tasks when later constraint parsing fails. An attacker that can speak the agent protocol locally or through agent forwarding can exhaust memory and tasks until the agent process is starved or terminated, denying SSH agent service. This issue is fixed in version 0.64.1.
- Product
- russh
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 29, 2026Russh is a Rust SSH client and server library.CVE-2026-102825 · Other software · Eugeny · reported by GitHubLow 3.7
Russh is a Rust SSH client and server library. Prior to 0.62.6, the USERAUTH_REQUEST path reached from server::run_stream in russh/src/server/encrypted.rs increments self.common.auth_attempts but never compares it with server::Config.max_auth_attempts. An unauthenticated remote client can continue submitting authentication requests on one connection beyond the configured cap, bypassing the deployment's attempt-limiting policy and increasing online guessing opportunity and backend authentication workload. This issue is fixed in version 0.62.6.
- Product
- russh
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 29, 2026Russh is a Rust SSH client and server library.CVE-2026-102824 · Other software · Eugeny · reported by GitHubMedium 4.3
Russh is a Rust SSH client and server library. Prior to 0.63.0, the hybrid ML-KEM 768 and X25519 implementation in russh/src/kex/hybrid_mlkem.rs accepts an all-zero 32-byte peer X25519 public key in both server_dh and compute_shared_secret, forcing the X25519 contribution to the combined shared secret to zero. A malicious SSH peer can therefore make the combined secret depend only on ML-KEM, defeating the hybrid exchange's intended fallback protection if ML-KEM is later weakened. This issue is fixed in version 0.63.0.
- Product
- russh
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 29, 2026Russh is a Rust SSH client and server library.CVE-2026-102823 · Other software · Eugeny · reported by GitHubHigh 7.5
Russh is a Rust SSH client and server library. Prior to 0.63.1, client_read_authenticated in russh/src/client/encrypted.rs forwards CHANNEL_DATA, CHANNEL_EXTENDED_DATA, CHANNEL_EOF, CHANNEL_CLOSE, CHANNEL_OPEN_FAILURE, CHANNEL_SUCCESS, CHANNEL_FAILURE, and CHANNEL_REQUEST subtypes exit-status, exit-signal, and xon-xoff to public client::Handler callbacks without confirming that the ChannelId belongs to a channel the client opened and established. A malicious SSH server can send lifecycle events for predicted, unopened, unconfirmed, or released channel identifiers, causing application panics or corrupting command completion and exit-code tracking. This issue is fixed in version 0.63.1.
- Product
- russh
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 29, 2026Russh is a Rust SSH client and server library.CVE-2026-102822 · Other software · Eugeny · reported by GitHubLow 3.7
Russh is a Rust SSH client and server library. Prior to 0.63.1, a connection configured to permit mac=none can negotiate it with a MAC-requiring CTR or CBC block cipher because the selection logic validates needs_mac() only when MAC selection fails. A remote peer can then send a packet with a decrypted length of zero, causing russh/src/cipher/mod.rs to shrink the previously read block before indexing buffer.buffer[16..], which panics and terminates the connection task. This issue is fixed in version 0.63.1.
- Product
- russh
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 29, 2026Russh is a Rust SSH client and server library.CVE-2026-102821 · Other software · Eugeny · reported by GitHubMedium 6.5
Russh is a Rust SSH client and server library. Prior to 0.63.2, an authenticated remote peer can send SSH_MSG_KEXINIT without the required SSH_MSG_KEX_ECDH_INIT and then flood SSH_MSG_CHANNEL_OPEN messages while SessionKexState::InProgress prevents priority_receiver in russh/src/server/session.rs from being drained. The server continues processing network input and enqueues a ChannelOpenReply for each request on an unbounded channel, allowing one connection to grow memory until the process is terminated. This issue is fixed in version 0.63.2.
- Product
- russh
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 29, 2026pageant provides a [PageantStream] type that implements [AsyncRead] and [AsyncWrite] traits and can be used to talk to a running Pageant instance.CVE-2026-102820 · Other software · Eugeny · reported by GitHubMedium 6.2
pageant provides a [PageantStream] type that implements [AsyncRead] and [AsyncWrite] traits and can be used to talk to a running Pageant instance. Prior to pageant 0.2.3, the Windows pageant crate's pageant/src/wmmessage.rs MemoryMap::read function trusts a peer-controlled u32 response length supplied through the 8192-byte Pageant shared-memory mapping reached by AgentClient::connect_pageant. A local process that impersonates the Pageant window can make query_pageant_direct allocate up to approximately 4 GiB and copy beyond the mapped view, reliably crashing a russh client and conditionally exposing adjacent committed memory. This issue is fixed in pageant 0.2.3.
- Product
- russh
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 13, 2026Russh is a Rust SSH client & server library.CVE-2026-73489 · Other software · Eugeny · reported by GitHubMedium 4.3
Russh is a Rust SSH client & server library. Prior to 0.62.4, an authenticated SSH client can cause a denial of service by sending a pty-req channel request with more than 130 terminal-mode records. The parser in russh/src/server/encrypted.rs stores terminal modes in a fixed 130-entry [(Pty::TTY_OP_END, 0); 130] array but continues increasing the mode count, then constructs an out-of-bounds slice and panics before the application pty_request handler runs. The panic terminates the server session task without causing memory corruption. This issue is fixed in version 0.62.4.
- Product
- russh
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 12, 2026Russh is a Rust SSH client & server library.CVE-2026-73430 · Other software · Eugeny · reported by GitHubMedium 5.3
Russh is a Rust SSH client & server library. Prior to 0.62.4, an unauthenticated SSH client can cause a denial of service by sending SSH_MSG_KEX_ECDH_INIT with a 32-byte all-zero Q_C value. Curve25519Kex::server_dh in russh/src/kex/curve25519.rs accepts the all-zero peer public value and computes an all-zero shared secret, after which compute_exchange_hash calls encode_mpint in russh/src/kex/mod.rs and indexes beyond the end of the input while skipping leading zero bytes. The resulting panic occurs before authentication and terminates the server key-exchange task. This issue is fixed in version 0.62.4.
- Product
- russh
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 12, 2026Russh is a Rust SSH client & server library.CVE-2026-73429 · Other software · Eugeny · reported by GitHubMedium 5.3
Russh is a Rust SSH client & server library. Prior to 0.62.4, a malicious SSH server can crash a russh client session with a malformed KEX_ECDH_REPLY containing a server ephemeral value that is not 32 bytes long. The client-side Curve25519Kex::compute_shared_secret function in russh/src/kex/curve25519.rs passes the decoded exchange.server_ephemeral value to clone_from_slice without validating its length, causing a deterministic panic before the server host key is verified. The panic terminates the spawned client session task and surfaces as a JoinError, while the embedding process normally remains running. This issue is fixed in version 0.62.4.
- Product
- russh
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 3, 2026Russh is a Rust SSH client & server library.CVE-2026-68930 · Other software · Eugeny · reported by GitHubMedium 6.5
Russh is a Rust SSH client & server library. Prior to 0.62.5, russh dispatches channel-scoped Handler callbacks for recipient channel IDs that were never opened or confirmed in russh/src/server/encrypted.rs, server_read_authenticated, and the exec_request callback. Version 0.62.5 fixes the issue.
- Product
- russh
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 10, 2026Russh is a Rust SSH client & server library.CVE-2026-48110 · Other software · Eugeny · reported by GitHubHigh 7.5
Russh is a Rust SSH client & server library. From version 0.34.0 to before version 0.61.0, several russh client and server message handlers decoded attacker-controlled SSH strings, name-lists, and byte fields into owned allocations before applying field-specific bounds. A remote SSH peer could send oversized, high-fanout, or malformed length-prefixed fields and make the library allocate, attempt to allocate, or split data before rejecting input that should have been rejected earlier. This issue has been patched in version 0.61.0.
- Product
- russh
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 10, 2026Russh is a Rust SSH client & server library.CVE-2026-48108 · Other software · Eugeny · reported by GitHubMedium 5.3
Russh is a Rust SSH client & server library. From version 0.34.0-beta.1 to before version 0.61.0, russh did not enforce the SSH identification-string rules as deliberately as OpenSSH. In particular, the server-side identification reader used the same permissive path as the client, allowing pre-banner lines from clients, and the reader did not enforce a bounded number of pre-banner lines. For a library server built on russh, this could allow a remote peer to hold connection setup resources in the cleartext pre-authentication phase with malformed identification input that should have been rejected early. This issue has been patched in version 0.61.0.
- Product
- russh
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 10, 2026Russh is a Rust SSH client & server library.CVE-2026-48107 · Other software · Eugeny · reported by GitHubMedium 6.5
Russh is a Rust SSH client & server library. From version 0.37.0 to before version 0.61.0, in the russh client keyboard-interactive authentication path, a malicious SSH server could send a USERAUTH_INFO_REQUEST with an attacker-controlled prompt count, and the client would use that raw count directly in Vec::with_capacity(...) before validating that enough prompt data was actually present in the packet. This issue has been patched in version 0.61.0.
- Product
- russh
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 10, 2026Russh is a Rust SSH client & server library.CVE-2026-46705 · Other software · Eugeny · reported by GitHubMedium 5.3
Russh is a Rust SSH client & server library. From version 0.34.0-beta.1 to before version 0.61.0, the russh server authentication path keeps internal userauth state across SSH_MSG_USERAUTH_REQUEST messages without separating that state when the request principal changes. RFC 4252 allows the user name and service name fields to change between authentication requests. The issue is not that such changes are invalid. The issue is that russh-owned authentication state, such as remaining methods, partial-success state, and in-progress method state, can remain associated with the connection and then influence a later request for a different (user, service). This is an internal library state mismatch. This issue has been patched in version 0.61.0.
- Product
- russh
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 10, 2026Russh is a Rust SSH client & server library.CVE-2026-46702 · Other software · Eugeny · reported by GitHubHigh 7.5
Russh is a Rust SSH client & server library. From version 0.34.0 to before version 0.61.1, when SSH compression is enabled, russh accepted compressed packets whose on-wire size passed the normal transport packet-length checks but whose decompressed size was much larger. This allowed a remote peer to send oversized post-decompression packets that should have been rejected. In current releases, this is a remote denial-of-service / resource-exhaustion issue in the post-decompression receive path. In older releases before 0.58.0, the same remote decompression path used CryptoVec, which appears to make the historical impact worse. This issue has been patched in version 0.61.1.
- Product
- russh
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 10, 2026Russh is a Rust SSH client & server library.CVE-2026-46673 · Other software · Eugeny · reported by GitHubHigh 7.5
Russh is a Rust SSH client & server library. Prior to version 0.60.3, CryptoVec used unchecked capacity growth, unchecked length arithmetic, and unsafe allocation/locking paths. In current russh releases, local SSH agent peers could still feed attacker-controlled frame lengths into buffer growth before validation. In older russh releases before 0.58.0, remote SSH traffic also reached CryptoVec through transport and compression buffers. This issue has been patched in version 0.60.3.
- Product
- russh
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 8, 2026Russh is a Rust SSH client & server library.CVE-2026-42189 · Other software · Eugeny · reported by GitHubHigh 7.5
Russh is a Rust SSH client & server library. Prior to version 0.60.1, a pre-authentication denial-of-service vulnerability exists in the server's keyboard-interactive authentication handler. A malicious client can crash any russh-based server that implements keyboard-interactive auth (e.g., for 2FA/TOTP) with a single malformed packet, requiring no credentials. This issue has been patched in version 0.60.1.
- Product
- russh
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 4, 2025Russh is a Rust SSH client & server library.CVE-2025-54804 · Other software · Eugeny · reported by GitHubMedium 6.5
Russh is a Rust SSH client & server library. In versions 0.54.0 and below, the channel window adjust message of the SSH protocol is used to track the free space in the receive buffer of the other side of a channel. The current implementation takes the value from the message and adds it to an internal state value. This can result in a integer overflow. If the Rust code is compiled with overflow checks, it will panic. A malicious client can crash a server. This is fixed in version 0.54.1.
- Product
- russh
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 21, 2024Russh is a Rust SSH client & server library.CVE-2024-43410 · Other software · Eugeny · reported by GitHubHigh 7.5
Russh is a Rust SSH client & server library. Allocating an untrusted amount of memory allows any unauthenticated user to OOM a russh server. An SSH packet consists of a 4-byte big-endian length, followed by a byte stream of this length. After parsing and potentially decrypting the 4-byte length, russh allocates enough memory for this bytestream, as a performance optimization to avoid reallocations later. But this length is entirely untrusted and can be set to any value by the client, causing this much memory to be allocated, which will cause the process to OOM within a few such requests. This vulnerability is fixed in 0.44.1.
- Product
- russh
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Mar 16, 2023russh is a Rust SSH client and server library.CVE-2023-28113 · Other software · warp-tech · reported by GitHubMedium 5.9
russh is a Rust SSH client and server library. Starting in version 0.34.0 and prior to versions 0.36.2 and 0.37.1, Diffie-Hellman key validation is insufficient, which can lead to insecure shared secrets and therefore breaks confidentiality. Connections between a russh client and server or those of a russh peer with some other misbehaving peer are most likely to be problematic. These may vulnerable to eavesdropping. Most other implementations reject such keys, so this is mainly an interoperability issue in such a case. This issue is fixed in versions 0.36.2 and 0.37.1
- Product
- russh
- 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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