{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-111062","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-10-15T12:47:13.665Z","datePublished":"2026-11-05T20:47:35.854Z","dateUpdated":"2026-11-05T21:15:12.818Z"},"containers":{"cna":{"title":"A russh SSH server accepts a publickey authentication whose signature uses a different algorithm than the one named in the request","problemTypes":[{"descriptions":[{"cweId":"CWE-347","lang":"en","description":"CWE-347: Improper Verification of Cryptographic Signature","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":2.3,"baseSeverity":"LOW","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"references":[{"name":"https://github.com/Eugeny/russh/security/advisories/GHSA-j7h2-66j4-ghjf","tags":["x_refsource_CONFIRM"],"url":"https://github.com/Eugeny/russh/security/advisories/GHSA-j7h2-66j4-ghjf"},{"name":"https://github.com/Eugeny/russh/pull/759","tags":["x_refsource_MISC"],"url":"https://github.com/Eugeny/russh/pull/759"},{"name":"https://github.com/Eugeny/russh/commit/a0ded76bdc352f8fbeaaeb175fb2a0c586fbc8f2","tags":["x_refsource_MISC"],"url":"https://github.com/Eugeny/russh/commit/a0ded76bdc352f8fbeaaeb175fb2a0c586fbc8f2"},{"name":"https://github.com/Eugeny/russh/releases/tag/v0.64.0","tags":["x_refsource_MISC"],"url":"https://github.com/Eugeny/russh/releases/tag/v0.64.0"}],"affected":[{"vendor":"Eugeny","product":"russh","versions":[{"version":">= 0.34.0-beta.1, < 0.64.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-11-05T20:47:35.854Z"},"descriptions":[{"lang":"en","value":"russh is a Rust SSH client and server library. From version 0.34.0-beta.1 until version 0.64.0, its SSH server does not require the signature algorithm in a public-key authentication signature to match the algorithm named in the authentication request. A client possessing an authorized RSA private key can announce  rsa-sha2-512  while supplying a valid  ssh-rsa  SHA-1 signature, bypassing restrictions or producing misleading audit records when applications rely on the requested algorithm. A valid private-key signature remains required, and russh clients are not affected. This issue is fixed in version 0.64.0."}],"source":{"advisory":"GHSA-j7h2-66j4-ghjf","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/Eugeny/russh/security/advisories/GHSA-j7h2-66j4-ghjf","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-11-05T21:14:57.282714Z","id":"CVE-2026-111062","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-11-05T21:15:12.818Z"}}]}}