MEDIUMCVSS 6.0EPSS 0.5%

CVE-2026-113793

CVE-2026-113793 updated by NVD

Published: 2026-10-21
Modified: 2026-10-30
EPSS percentile: 39%
Sources: github-advisory, nvd

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.20.1, removing an object from a crafted cyclic PDF tree, such as an outline item, can enter an infinite loop and block the current process. This issue is fixed in version 6.20.1.

Affected packages

Ecosystem	Package	Affected versions	Fixed versions
PyPI	pypdf	—	6.20.1

Remediation: Upgrade to 6.20.1 or later.

References

https://nvd.nist.gov/vuln/detail/CVE-2026-113793

Includes data from the GitHub Advisory Database, licensed under CC-BY 4.0.

Includes data from the National Vulnerability Database (NIST). NVD data is in the public domain; this page is not endorsed by NIST.

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EPSS scores provided by the FIRST.org Exploit Prediction Scoring System.