Loop with Unreachable Exit Condition ('Infinite Loop') Affecting pypdf package, versions *


Severity

Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
0.17% (7th percentile)

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  • Snyk IDSNYK-DEBIAN13-PYPDF-15325586
  • published21 Feb 2026
  • disclosed20 Feb 2026

Introduced: 20 Feb 2026

CVE-2026-27024  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

There is no fixed version for Debian:13 pypdf.

NVD Description

Note: Versions mentioned in the description apply only to the upstream pypdf package and not the pypdf package as distributed by Debian. See How to fix? for Debian:13 relevant fixed versions and status.

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 an infinite loop. This requires accessing the children of a TreeObject, for example as part of outlines. This vulnerability is fixed in 6.7.1.

CVSS Base Scores

version 3.1