CVE-2026-54651

Published June 22nd, 2026

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CVSS v3

5.5

MEDIUM

CVSS v2

N/A

Affected

PROJECT

Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.13.1, 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. This vulnerability is fixed in 6.13.1.

py-pdf/pypdf

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

GitHub

10K