UNKNOWN PyPI
pypdf: Possible long runtimes for repeated malformed cross-reference entries
PYSEC-2026-3610 · CVE-2026-59937 · GHSA-55h5-xmcq-c37v
Published · Modified
AI SAST
Find this class of vulnerability in your own code
Corgea's AI-native static analysis detects vulnerabilities like this one across your repositories, ranks them by exploitability, and returns review-ready fixes.
Description
Impact
An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires cross-reference streams with repeated malformed cross-reference streams.
Patches
This has been fixed in pypdf==6.14.0.
Workarounds
If you cannot upgrade yet, consider applying the changes from PR #3887.
References
- WEB https://github.com/py-pdf/pypdf/security/advisories/GHSA-55h5-xmcq-c37v
- ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-59937
- WEB https://github.com/py-pdf/pypdf/pull/3887
- WEB https://github.com/py-pdf/pypdf/commit/b5fc5aa714f4b696fb9b1deaa35a9e4a4eb50dae
- PACKAGE https://github.com/py-pdf/pypdf
- WEB https://github.com/py-pdf/pypdf/releases/tag/6.14.0
- PACKAGE https://pypi.org/project/pypdf
- ADVISORY https://github.com/advisories/GHSA-55h5-xmcq-c37v
Ready to move
Start Securing
Free, no credit card | First findings in minutes