{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0.34.0-beta.1"
                  },
                  {
                    "fixed": "0.64.0"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              },
              {
                "range": [
                  {
                    "fixed": "a0ded76bdc352f8fbeaaeb175fb2a0c586fbc8f2"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "original_tag": "v0.64.0",
                "range": [
                  {
                    "fixed": "497314960942156301ab17221b1c681156239f39"
                  }
                ],
                "source": "REFERENCES_TAG"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "497314960942156301ab17221b1c681156239f39"
            },
            {
              "fixed": "a0ded76bdc352f8fbeaaeb175fb2a0c586fbc8f2"
            }
          ],
          "repo": "https://github.com/eugeny/russh",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-j7h2-66j4-ghjf"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-347"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111062.json"
  },
  "details": "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.",
  "id": "CVE-2026-111062",
  "modified": "2026-11-07T02:30:17.921708791Z",
  "published": "2026-11-05T20:47:35.854Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Eugeny/russh/releases/tag/v0.64.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111062.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/Eugeny/russh/security/advisories/GHSA-j7h2-66j4-ghjf"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-111062"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Eugeny/russh/commit/a0ded76bdc352f8fbeaaeb175fb2a0c586fbc8f2"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Eugeny/russh/pull/759"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "A russh SSH server accepts a publickey authentication whose signature uses a different algorithm than the one named in the request"
}