Security Advisory

CVE-2026-27025

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-02-20 21:11:20

Last updated 2026-02-24 18:40:02

Assigner GitHub_M

State PUBLISHED

Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.7.1, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes and large memory consumption. This requires parsing the /ToUnicode entry of a font with unusually large values, for example during text extraction. This vulnerability is fixed in 6.7.1.

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