PyPI/pypdf CVE-2026-54531: medium, EPSS 0.17%

pypdf: Possible infinite loop when processing outlines/bookmarks in writer

Action: Upgrade pypdf to 6.13.0 or later.

pip install pypdf==6.13.0

Affected

Fixed versions

Sources

• osv: GHSA-m2v9-299j-rv96
• https://github.com/py-pdf/pypdf/security/advisories/GHSA-m2v9-299j-rv96
• https://github.com/py-pdf/pypdf/pull/3830
• https://github.com/py-pdf/pypdf
• https://github.com/py-pdf/pypdf/releases/tag/6.13.0

CVE-2026-54531 · published 2026-06-16T14:05:57Z · modified 2026-09-10T03:51:08.924739649Z · JSON