CVE-2026-24688 — Vulnerability intelligence

py-pdf — pypdf

Published: 2026-01-27T20:16:24.193

CVSS

5.1

CISA KEV

Not listed; not proof of no exploitation

Original source text (not a translation)

pypdf is a free and open-source pure-python PDF library. An attacker who uses an infinite loop vulnerability that is present in versions prior to 6.6.2 can craft a PDF which leads to an infinite loop. This requires accessing the outlines/bookmarks. This has been fixed in pypdf 6.6.2. If projects cannot upgrade yet, consider applying the changes from PR #3610 manually.

Sources

• CVE-2026-24688
• Patch
• Issue Tracking
• Product, Release Notes
• Vendor Advisory