CVE-2026-71852

UNKNOWN 0.0

pypdf: Possible long runtimes/large memory usage for large CID font width ranges

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-834
Vendor	py-pdf
Product	pypdf
Published	Aug 7, 2026

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Affected Versions

py-pdf / pypdf

< 6.15.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/py-pdf/pypdf/security/advisories/GHSA-fwg2-594c-jp42 github.com: https://github.com/py-pdf/pypdf/pull/3946 github.com: https://github.com/py-pdf/pypdf/commit/51cb6acf9e8a35b77e90b4d87d28fe3e1416d7d7 github.com: https://github.com/py-pdf/pypdf/releases/tag/6.15.0