{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "0.5.2"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "b282f0554972ea35281520738759d76abcd0b0b3"
            },
            {
              "fixed": "5da508af3c3dc6e920286141d1a4ddcd4ec245db"
            }
          ],
          "repo": "https://github.com/decolua/9router",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-8gmq-j984-vp4r"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-862",
      "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55638.json"
  },
  "details": "9Router is an AI router \u0026 token saver. Prior to 0.5.2, 9router protects /v1, /v1beta, /api/v1, and /api/v1beta in src/dashboardGuard.js but omits /codex before next.config.mjs rewrites /codex/* to /api/v1/responses. A remote unauthenticated attacker can send requests to /codex/* to bypass the API-key gate and cause the server to make upstream provider calls using operator-stored LLM provider credentials. This issue is fixed in version 0.5.2.",
  "id": "CVE-2026-55638",
  "modified": "2026-08-12T03:51:30.431628302Z",
  "published": "2026-07-10T15:38:21.922Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/decolua/9router/releases/tag/v0.5.2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55638.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/decolua/9router/security/advisories/GHSA-8gmq-j984-vp4r"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55638"
    },
    {
      "type": "FIX",
      "url": "https://github.com/decolua/9router/commit/b282f0554972ea35281520738759d76abcd0b0b3"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "9router: Unauthenticated LLM proxy access via /codex rewrite authorization bypass"
}