{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:russh_project:russh:*:*:*:*:*:rust:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "0.60.1"
              }
            ],
            "source": [
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5a6ca29ef2171b070433308fcf0e43785b608071"
            },
            {
              "fixed": "6c3c80a9b6d60763d6227d60fa8310e57172a4d1"
            }
          ],
          "repo": "https://github.com/eugeny/russh",
          "type": "GIT"
        },
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:warpgate_project:warpgate:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "0.23.1"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "ffc755f0137944bd39cf4cbce90f4279da500943"
            }
          ],
          "repo": "https://github.com/warp-tech/warpgate",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-f5v4-2wr6-hqmg"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-770",
      "CWE-789"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42189.json"
  },
  "details": "Russh is a Rust SSH client \u0026 server library. Prior to version 0.60.1, a pre-authentication denial-of-service vulnerability exists in the server's keyboard-interactive authentication handler. A malicious client can crash any russh-based server that implements keyboard-interactive auth (e.g., for 2FA/TOTP) with a single malformed packet, requiring no credentials. This issue has been patched in version 0.60.1.",
  "id": "CVE-2026-42189",
  "modified": "2026-07-15T01:48:58.664164142Z",
  "published": "2026-05-08T19:49:51.179Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Eugeny/russh/releases/tag/v0.60.1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42189.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/Eugeny/russh/security/advisories/GHSA-f5v4-2wr6-hqmg"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42189"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Eugeny/russh/commit/6c3c80a9b6d60763d6227d60fa8310e57172a4d1"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Russh: Pre-auth DoS via unbounded allocation in keyboard-interactive auth"
}