{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "0.63.0"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "dbe2234491fcd50e0bf68438452932f918092fe0"
            }
          ],
          "repo": "https://github.com/eugeny/russh",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-w3jg-pjxf-73p4"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-327"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102824.json"
  },
  "details": "Russh is a Rust SSH client and server library. Prior to 0.63.0, the hybrid ML-KEM 768 and X25519 implementation in russh/src/kex/hybrid_mlkem.rs accepts an all-zero 32-byte peer X25519 public key in both server_dh and compute_shared_secret, forcing the X25519 contribution to the combined shared secret to zero. A malicious SSH peer can therefore make the combined secret depend only on ML-KEM, defeating the hybrid exchange's intended fallback protection if ML-KEM is later weakened. This issue is fixed in version 0.63.0.",
  "id": "CVE-2026-102824",
  "modified": "2026-09-30T03:30:34.704487867Z",
  "published": "2026-09-29T18:27:41.650Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102824.json"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Eugeny/russh/commit/8da8967f196472576b1565d518a0ed60fce60f0c"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Eugeny/russh/releases/tag/v0.63.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/Eugeny/russh/security/advisories/GHSA-w3jg-pjxf-73p4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-102824"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Russh: Missing X25519 zero-point validation in hybrid ML-KEM key exchange"
}