GHSA-62m5-6wh8-28x7High
pypdf has possible long runtimes/large memory usage for encrypted PDF files
🔗 CVE IDs covered (1)
📋 Description
Impact
An attacker who uses this vulnerability can craft a PDF which leads to large runtimes/memory usage. This requires accessing the page count of an encrypted PDF file, which itself declares a wrong /Count value.
Patches
This has been fixed in pypdf==6.21.3.
Workarounds
If you cannot upgrade yet, consider applying the changes from PR #4270.
🎯 Affected products1
- pip/pypdf:< 6.21.3
🔗 References (6)
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-62m5-6wh8-28x7
- https://nvd.nist.gov/vuln/detail/CVE-2026-119208
- https://github.com/py-pdf/pypdf/pull/4270
- https://github.com/py-pdf/pypdf/commit/82b91951dc74496bb3efe6465434f041bb6a5e6b
- https://github.com/py-pdf/pypdf/releases/tag/6.21.3
- https://github.com/advisories/GHSA-62m5-6wh8-28x7