Vulnerability in Py-Pdf Pypdf

CVE-2026-71852

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.

EPSS: 0.001 (2.7th percentile) — read the EPSS interpretation.

Affected products

Weakness classification (CWE)

References