Skip to content
CVE PROGRAM SOURCE RECORD6.0 Medium

CVE-2026-113790

pypdf: Possible large memory usage when parsing arrays and dictionaries

Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.0, an attacker can craft a PDF containing arrays or dictionaries with many elements, causing parsing to consume large amounts of memory. This issue is fixed in version 6.21.0.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

py-pdf pypdf

  • < 6.21.0affected

References