CVE-2026-71852

MEDIUM

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

Title source: cna
STIX 2.1

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.

References (4)

Core 4

Scores

CVSS v4 4.8
EPSS 0.0013
EPSS Percentile 2.7%
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Details

CWE
CWE-834
Status published
Products (2)
py-pdf/pypdf < 6.15.0
pypi/pypdf 0 - 6.15.0PyPI
Published Aug 07, 2026
Tracked Since Aug 08, 2026