{
  "cveId": "CVE-2026-114615",
  "url": "https://patchblox.com/security/cve/CVE-2026-114615",
  "summary": "CVE-2026-114615 is fixed in python-authlib on 1 platform by DEBIAN-CVE-2026-114615 (version 1.9.1-1), released October 31, 2026. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": "python-authlib: Authlib is a Python library which builds OAuth and OpenID Connect servers",
  "description": "Authlib is a Python library which builds OAuth and OpenID Connect servers. From 1.3.1 until 1.9.0, OctKey.import_key() checks asymmetric-key markers only at byte zero while Authlib\u0027s PEM loaders accept leading whitespace, comments, or a byte-order mark. In deployments that use the documented mixed algorithm registry and already configure verification with PEM or certificate bytes containing such a prefix, an unauthenticated attacker who knows those same public-key bytes can use them as an HMAC secret and forge HS256 tokens with arbitrary identity or authorization claims. This is a bypass of the remediation for CVE-2024-37568. The module-level jwt object reaches OctKey.import_key() in authlib/jose/rfc7518/oct_key.py, where POSSIBLE_UNSAFE_KEYS fails to identify prefixed asymmetric key material. This issue is fixed in version 1.9.0.",
  "published": "2026-10-22T22:18:04Z",
  "severity": "critical",
  "cvss": 9.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
  "epss": 0.00213,
  "epssPercentile": 0.11653,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "python-authlib",
      "release": "Debian 14",
      "fixedVersion": "1.9.1-1",
      "fix": "DEBIAN-CVE-2026-114615",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-114615",
      "released": "2026-10-31T22:18:21Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T13:31:49Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}