{"id":"CVE-2026-116775","aliases":[],"title":"pageant: unbounded frame buffering on peer-controlled 4-byte length prefix (memory-exhaustion DoS)","titleSource":"GitHub_M","descriptionSource":"GitHub_M","products":[{"vendor":"Eugeny","name":"russh","platforms":[],"versions":[{"version":">= 0.2.0, < 0.2.5","status":"affected"}],"source":"GitHub_M","url":"https://www.cve.org/CVERecord?id=CVE-2026-116775"}],"remediation":[],"description":"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0.2.5.","severity":"low","score":2.3,"published":"2026-10-27T20:27:30.852Z","modified":"2026-10-27T20:27:30.852Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://github.com/Eugeny/russh/security/advisories/GHSA-662x-8wvj-2276","https://github.com/Eugeny/russh/commit/69e4b55513eaa8ac9d2ad4236f13171fc164e10a","https://github.com/Eugeny/russh/releases/tag/v0.65.0"],"sources":[{"name":"CVE","id":"CVE-2026-116775","modified":"2026-10-27T20:27:30.852Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-116775"}],"assessments":[{"source":"GitHub_M","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","score":2.3}],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T19:10:31.056Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}