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CVE PROGRAM SOURCE RECORD6.9 Medium

CVE-2026-59937

pypdf: Possible long runtimes for repeated malformed cross-reference entries

Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.14.0, an attacker can craft a PDF with repeated malformed cross-reference streams that cause pypdf to spend long runtimes recovering broken cross-reference table entries. This issue is fixed in version 6.14.0.

Affected products

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

py-pdf pypdf

  • < 6.14.0affected

References