{
  "cveId": "CVE-2025-62706",
  "url": "https://patchblox.com/security/cve/CVE-2025-62706",
  "summary": "CVE-2025-62706 is fixed in 3 products on 1 platform, first by python3-authlib 0.15.5-1ubuntu0.1~esm1, released October 22, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "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. Prior to version 1.6.5, Authlib\u2019s JWE zip=DEF path performs unbounded DEFLATE decompression. A very small ciphertext can expand into tens or hundreds of megabytes on decrypt, allowing an attacker who can supply decryptable tokens to exhaust memory and CPU and cause denial of service. This issue has been patched in version 1.6.5. Workarounds for this issue involve rejecting or stripping zip=DEF for inbound JWEs at the application boundary, forking and add a bounded decompression guard via decompressobj().decompress(data, MAX_SIZE)) and returning an error when output exceeds a safe limit, or enforcing strict maximum token sizes and fail fast on oversized inputs; combine with rate limiting.",
  "published": "2025-10-22T15:15:00Z",
  "severity": "medium",
  "cvss": 6.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00458,
  "epssPercentile": 0.39953,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "python-Authlib",
      "release": "opensuse-leap 15.6",
      "fixedVersion": "1.3.1-150600.3.9.1",
      "fix": "SUSE-SU-2025:3842-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2025-3842-1",
      "released": "2025-10-28T16:39:39Z"
    },
    {
      "platform": "linux",
      "product": "python-Authlib",
      "release": "sles 15.6",
      "fixedVersion": "1.3.1-150600.3.9.1",
      "fix": "SUSE-SU-2025:3842-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2025-3842-1",
      "released": "2025-10-28T16:39:39Z"
    },
    {
      "platform": "linux",
      "product": "python-Authlib",
      "release": "sles 15.7",
      "fixedVersion": "1.3.1-150600.3.9.1",
      "fix": "SUSE-SU-2025:3842-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2025-3842-1",
      "released": "2025-10-28T16:39:39Z"
    },
    {
      "platform": "linux",
      "product": "python-authlib",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "1.2.0-1\u002Bdeb12u1",
      "fix": "DEBIAN-CVE-2025-62706",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-62706",
      "released": "2025-10-22T22:15:35Z"
    },
    {
      "platform": "linux",
      "product": "python-authlib",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "1.6.0-1\u002Bdeb13u1",
      "fix": "DEBIAN-CVE-2025-62706",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-62706",
      "released": "2025-10-22T22:15:35Z"
    },
    {
      "platform": "linux",
      "product": "python-authlib",
      "release": "Debian 14",
      "fixedVersion": "1.6.5-1",
      "fix": "DEBIAN-CVE-2025-62706",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-62706",
      "released": "2025-10-22T22:15:35Z"
    },
    {
      "platform": "linux",
      "product": "python3-authlib",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "0.15.5-1ubuntu0.1~esm1",
      "fix": "python3-authlib 0.15.5-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-python3-authlib-0.15.5-1ubuntu0.1-esm1",
      "released": "2025-10-22T15:15:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-authlib",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "1.3.0-1ubuntu0.1~esm1",
      "fix": "python3-authlib 1.3.0-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-python3-authlib-1.3.0-1ubuntu0.1-esm1",
      "released": "2026-01-08T10:15:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}