{"schema":"threatline.record/2","record":{"id":"CVE-2026-116794","aliases":["GHSA-vp5q-ff62-jwqv"],"summary":"russh: Agent server never calls `Agent::confirm`, so keys added with the confirm constraint (`ssh-add -c`) sign without confirmation","details":"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.","categories":["Unclassified"],"product":"russh","vendor":"Eugeny","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-116794","source_modified_at":"2026-10-28T17:06:57.542Z","fetched_at":"2026-10-28T20:58:01.013507Z","product":"russh","vendor":"Eugeny","versions":[{"version":"< 0.65","status":"affected"}],"defaultStatus":null}],"fixed_versions":[],"cvss":8.3,"severity":"High","kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-28T17:06:57.542Z","modified_at":"2026-10-28T17:06:57.542Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-116794","fetched_at":"2026-10-28T20:58:01.013507Z","source_modified_at":"2026-10-28T17:06:57.542Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://github.com/Eugeny/russh/security/advisories/GHSA-vp5q-ff62-jwqv","tags":["x_refsource_CONFIRM"]},{"source":"CVE List","url":"https://github.com/Eugeny/russh/commit/3e04597dc54e36bfc85c21996f7d8d9d224e9826","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/Eugeny/russh/commit/62db6e7defd6d244159da962ccccb029e785ce0f","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/Eugeny/russh/releases/tag/v0.65.0","tags":["x_refsource_MISC"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-28T17:06:57.542Z","content_hash":"cc4e82eee6544a47daa09a2dc28f6f7f713df3bd3ee4983fc6cea07479ece161"}}