pypdf is a free and open-source pure-python PDF library. Prior to 6.14.2, an attacker can craft a PDF with a page content stream containing a not terminated inline image that uses the ASCII85 or ASCIIHex filters, causing an infinite loop during parsing such as when extracting page text. This issue is fixed in version 6.14.2.
Fix
Patch, vendor advisory and mitigation references on NVD 3
- https://github.com/py-pdf/pypdf/commit/5a33a46416aa1ae6c025ff90a3cca57631fdafd2 Patch
- https://github.com/py-pdf/pypdf/pull/3892 Issue Tracking, Patch
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-g867-7843-wf8q 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 8.7 · 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/5a33a46416aa1ae6c025ff90a3cca57631fdafd2 Patch
- https://github.com/py-pdf/pypdf/pull/3892 Issue Tracking, Patch
- https://github.com/py-pdf/pypdf/releases/tag/6.14.2 Product, Release Notes
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-g867-7843-wf8q Patch, Vendor Advisory