HIGHCVSS 7.1EPSS 0.3%

CVE-2026-119205

CVE-2026-119205 updated by NVD

Published: 2026-10-30
Modified: 2026-11-04
EPSS percentile: 23%
Sources: github-advisory, nvd

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.4, pypdf can enter an infinite loop when cloning or duplicating a crafted cyclic DictionaryObject. Clone traversal checked generated destination references rather than the original source references, allowing some source cycles to evade the visited-object check. This issue is fixed in version 6.21.4.

Affected packages

Ecosystem	Package	Affected versions	Fixed versions
PyPI	pypdf	—	6.21.4

Remediation: Upgrade to 6.21.4 or later.

References

https://nvd.nist.gov/vuln/detail/CVE-2026-119205

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.