{
  "cveId": "CVE-2023-36807",
  "url": "https://patchblox.com/security/cve/CVE-2023-36807",
  "summary": "CVE-2023-36807 is fixed in pypdf2 on 1 platform by DEBIAN-CVE-2023-36807 (version 2.10.7-1), released June 30, 2023. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "pypdf2: pypdf is a pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files",
  "description": "pypdf is a pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files. In version 2.10.5 an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This infinite loop blocks the current process and can utilize a single core of the CPU by 100%. It does not affect memory usage. That is, for example, the case if the user extracted metadata from such a malformed PDF. Versions prior to 2.10.5 throw an error, but do not hang forever. This issue was fixed with https://github.com/py-pdf/pypdf/pull/1331 which has been included in release 2.10.6. Users are advised to upgrade. Users unable to upgrade should modify \u0060PyPDF2/generic/_data_structures.py::read_object\u0060 to an an error throwing case. See GHSA-hm9v-vj3r-r55m for details.",
  "published": "2023-06-30T19:15:09Z",
  "severity": "medium",
  "cvss": 6.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
  "epss": 0.00573,
  "epssPercentile": 0.476,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "pypdf2",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "2.10.7-1",
      "fix": "DEBIAN-CVE-2023-36807",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-36807",
      "released": "2023-06-30T19:15:09Z"
    }
  ],
  "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"
  }
}