Excessive Iteration Affecting pypdf package, versions <6.19.0-1


Severity

Recommended
0.0
low
0
10

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Threat Intelligence

EPSS
0.13% (2nd percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-PYPDF-18585287
  • published8 Aug 2026
  • disclosed7 Aug 2026

Introduced: 7 Aug 2026

CVE-2026-71852  (opens in a new tab)
CWE-834  (opens in a new tab)

How to fix?

Upgrade Debian:unstable pypdf to version 6.19.0-1 or higher.

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:unstable relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1