CVE-2026-24688

Published January 27th, 2026

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CVSS v3

4.3

MEDIUM

CVSS v2

N/A

Affected

PROJECT

Description

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.

py-pdf/pypdf

A pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files

GitHub

10K