{"id":"CVE-2026-111062","revision":"e3f02d20ab824fd187e0d3ea9358c92f","records":[{"revision":"e3f02d20ab824fd187e0d3ea9358c92f","observedAt":"2026-11-05T21:36:21.359+00:00","statement":{"source":"cve-program","id":"CVE-2026-111062","aliases":[],"title":"A russh SSH server accepts a publickey authentication whose signature uses a different algorithm than the one named in the request","description":"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 \u00A0rsa-sha2-512\u00A0 while supplying a valid \u00A0ssh-rsa\u00A0 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.","state":0,"publishedAt":"2026-11-05T20:47:35.854+00:00","modifiedAt":"2026-11-05T20:47:35.854+00:00","affected":[{"ecosystem":"Vendor product","name":"russh","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Eugeny\",\n                    \"product\": \"russh\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 0.34.0-beta.1, < 0.64.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"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","score":2.3,"severity":"LOW"}],"references":["https://github.com/Eugeny/russh/security/advisories/GHSA-j7h2-66j4-ghjf","https://github.com/Eugeny/russh/pull/759","https://github.com/Eugeny/russh/commit/a0ded76bdc352f8fbeaaeb175fb2a0c586fbc8f2","https://github.com/Eugeny/russh/releases/tag/v0.64.0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111062","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-111062","identifiers":["CVE-2026-111062"]},"retained":false,"historicalAffected":[]}],"coverage":[]}