CVE-2025-62708: Pypdf Project Pypdf

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

pypdf is a free and open-source pure-python PDF library. Prior to version 6.1.3, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream of a page using the LZWDecode filter. This has been fixed in pypdf version 6.1.3.

Affected products

• Pypdf Project Pypdf: before 6.1.3 (fixed in 6.1.3)

Published 2025-10-22. Last modified 2026-10-08.