Infinite loop Affecting pypdf package, versions [,6.13.0)


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.13% (3rd percentile)

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  • Snyk IDSNYK-PYTHON-PYPDF-17356481
  • published17 Jun 2026
  • disclosed16 Jun 2026
  • creditYukich

Introduced: 16 Jun 2026

NewCVE-2026-54530  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

Upgrade pypdf to version 6.13.0 or higher.

Overview

pypdf is an A pure-python PDF library capable of splitting, merging, cropping, and transforming PDF files

Affected versions of this package are vulnerable to Infinite loop via the font retrieving. An attacker can cause the application to enter an infinite loop by crafting a specially designed PDF file and triggering text extraction in layout mode.

CVSS Base Scores

version 4.0
version 3.1