PT-2026-20908

CVE-2026-27025

Published

2026-02-18

Updated

2026-08-14

Description by

CVSS 4.0

6.9

Medium

MetricsAV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions pypdf versions prior to 6.7.1

Description pypdf is a free and open-source pure-python PDF library. An attacker can create a malicious PDF file that causes excessive runtime and memory usage when processed. This occurs when parsing the /ToUnicode entry of a font containing unusually large values, such as during text extraction.

Recommendations Update to version 6.7.1 or later.

Exploitability

Exploit

Fix

Impacts

Researchers

Vendors

Affected products

Weakness enumeration

CWE-834: Excessive Iteration

Related identifiers

CVE-2026-27025