{
  "cveId": "CVE-2026-82398",
  "url": "https://patchblox.com/security/cve/CVE-2026-82398",
  "summary": "CVE-2026-82398 is fixed in pypdf on 1 platform by DEBIAN-CVE-2026-82398 (version 6.19.0-1), released August 31, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "pypdf: pypdf is a free and open-source pure-python PDF library",
  "description": "pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, an attacker can craft a PDF that causes long runtimes when the pypdf/_utils.py function read_until_whitespace reads a stream containing a long run of bytes without whitespace. The function repeatedly performs immutable bytes concatenation in a one-byte loop, causing quadratic processing cost for the long non-whitespace input. This issue is fixed in version 6.15.0.",
  "published": "2026-08-31T22:17:23Z",
  "severity": "medium",
  "cvss": 5.3,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
  "epss": 0.00524,
  "epssPercentile": 0.44685,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "pypdf",
      "release": "Debian 14",
      "fixedVersion": "6.19.0-1",
      "fix": "DEBIAN-CVE-2026-82398",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-82398",
      "released": "2026-08-31T22:17:23Z"
    }
  ],
  "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"
  }
}