{"id":"CVE-2026-119208","published":"2026-10-29T21:17:20.090","lastModified":"2026-10-29T21:17:20.090","description":"pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can consume excessive time and memory when an application accesses the page count of a crafted encrypted PDF whose page tree declares a forged /Count value. Even after successful decryption, page-count retrieval trusts the unvalidated declared count instead of walking the page tree, allowing the attacker-controlled value to drive excessive work and memory use. This issue is fixed in version 6.21.3.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-400"],"vendors":[],"products":[],"references":[{"url":"https://github.com/py-pdf/pypdf/commit/82b91951dc74496bb3efe6465434f041bb6a5e6b","tags":[]},{"url":"https://github.com/py-pdf/pypdf/pull/4270","tags":[]},{"url":"https://github.com/py-pdf/pypdf/releases/tag/6.21.3","tags":[]},{"url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-62m5-6wh8-28x7","tags":[]}],"exploitRefs":[{"url":"https://github.com/py-pdf/pypdf/commit/82b91951dc74496bb3efe6465434f041bb6a5e6b","tags":[]},{"url":"https://github.com/py-pdf/pypdf/pull/4270","tags":[]},{"url":"https://github.com/py-pdf/pypdf/releases/tag/6.21.3","tags":[]},{"url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-62m5-6wh8-28x7","tags":[]}],"hasPoc":true,"ai":null}