Excessive Iteration Affecting pypdf package, versions <6.19.0-1


Severity

Recommended
0.0
low
0
10

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Threat Intelligence

EPSS
0.14% (3rd percentile)

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  • Snyk IDSNYK-DEBIAN14-PYPDF-19500579
  • published2 Sept 2026
  • disclosed1 Sept 2026

Introduced: 1 Sep 2026

CVE-2026-84311  (opens in a new tab)
CWE-834  (opens in a new tab)

How to fix?

Upgrade Debian:14 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:14 relevant fixed versions and status.

pypdf is a free and open-source pure-python PDF library. Prior to 6.16.1, an attacker can craft a PDF that causes pypdf/_page.py PageObject._extract_text and PageObject.extract_xform_text to traverse a directed acyclic graph of reused form XObjects in which each form invokes a child multiple times, creating exponentially many traversal paths and causing long runtimes and large memory consumption. This issue is fixed in version 6.16.1.

CVSS Base Scores

version 3.1