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.
Fix
Patch, vendor advisory and mitigation references on NVD 3
- https://github.com/py-pdf/pypdf/commit/c64583be16b8e8763d8777075f8ecbf382014b7a Patch
- https://github.com/py-pdf/pypdf/pull/3888 Issue Tracking, Patch
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-5qjq-93h5-hrgp Patch, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.9 · pypdf_projectNVD modified 2026-10-25 17:10
Affected (CPE criteria) 1
cpe:2.3:a:pypdf_project:pypdf:*:*:*:*:*:*:*:*
References 4
- https://github.com/py-pdf/pypdf/commit/c64583be16b8e8763d8777075f8ecbf382014b7a Patch
- https://github.com/py-pdf/pypdf/pull/3888 Issue Tracking, Patch
- https://github.com/py-pdf/pypdf/releases/tag/6.14.0 Product, Release Notes
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-5qjq-93h5-hrgp Patch, Vendor Advisory