UNKNOWN PyPI
pypdf: Possible infinite loop when processing threads/articles in writer
PYSEC-2026-3018 · CVE-2026-54651 · GHSA-g9xf-7f8q-9mcj
Published · Modified
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Description
Impact
An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires merging a file with threads/articles into a writer.
Patches
This has been fixed in pypdf==6.13.1.
Workarounds
If users cannot upgrade yet, consider applying the changes from PR #3839.
References
- WEB https://github.com/py-pdf/pypdf/security/advisories/GHSA-g9xf-7f8q-9mcj
- ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-54651
- WEB https://github.com/py-pdf/pypdf/pull/3839
- PACKAGE https://github.com/py-pdf/pypdf
- WEB https://github.com/py-pdf/pypdf/releases/tag/6.13.1
- PACKAGE https://pypi.org/project/pypdf
- ADVISORY https://github.com/advisories/GHSA-g9xf-7f8q-9mcj
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