CVE-2026-71852

MEDIUM

CVE: CVE-2026-71852 - pypdf is a free and open-source pure-python PDF librarySign in to save

CVSS

4.8

CVSS v4.0

EPSS

0.1%

Exploit Prediction Score

Published

August 7, 2026

Exploitability

EPSS probability 0.1%

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.

Weaknesses

CWE-834

Affected Packages

No package data available.

Aliases

CVE-2026-71852

Related references

Publisher and database URLs for this record (shown for attribution; reading stays in Bugflare).

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