CVE-2026-59938: Pypdf Project Pypdf

Medium severity, CVSS 5.3. EPSS: 0.5% chance of exploitation in the next 30 days.

pypdf is a free and open-source pure-python PDF library. Prior to 6.14.0, an attacker can craft a PDF with declared image size values that are much too large compared to the actual data, causing large memory usage in pypdf image parsing. This issue is fixed in version 6.14.0.

Affected products

• Pypdf Project Pypdf: before 6.14.0 (fixed in 6.14.0)

Published 2026-07-08. Last modified 2026-07-09.