CVE-2026-54531 — Vulnerability intelligence

py-pdf — pypdf

Published: 2026-06-22T21:16:25.550

CVSS

6.9

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. Prior to 6.13.0, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires merging a file with outlines into a writer. This vulnerability is fixed in 6.13.0.

Sources

• CVE-2026-54531
• Issue Tracking, Patch
• Patch, Release Notes
• Patch, Vendor Advisory