Vulnerability Description
pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, a crafted PDF can cause long runtimes and large memory consumption when pypdf/_font.py function Font._collect_cid_character_widths expands unusually large CID font /W width ranges or excessive width entries during text extraction. This issue is fixed in 6.15.0.
Related Weaknesses (CWE)
References
- https://github.com/py-pdf/pypdf/commit/51cb6acf9e8a35b77e90b4d87d28fe3e1416d7d7
- https://github.com/py-pdf/pypdf/pull/3946
- https://github.com/py-pdf/pypdf/releases/tag/6.15.0
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-fwg2-594c-jp42
FAQ
What is CVE-2026-71852?
CVE-2026-71852 is a documented vulnerability. pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, a crafted PDF can cause long runtimes and large memory consumption when pypdf/_font.py function Font._collect_cid_character_wi...
How severe is CVE-2026-71852?
CVSS scoring is not yet available for CVE-2026-71852. Check NVD for updates.
Is there a patch for CVE-2026-71852?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.