CVE-2026-113793

— UNSCOREDpublic exploit available

Published 2026-10-21 · Updated 2026-10-22

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD description

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.

Weaknesses

CWE-835

Public exploit & PoC references

https://github.com/py-pdf/pypdf/commit/c9c35b4471c2eb5fe078094f6c816e69d4ed25a0
https://github.com/py-pdf/pypdf/pull/4188
https://github.com/py-pdf/pypdf/releases/tag/6.20.1
https://github.com/py-pdf/pypdf/security/advisories/GHSA-9mx8-4j7g-633p

All references

https://github.com/py-pdf/pypdf/commit/c9c35b4471c2eb5fe078094f6c816e69d4ed25a0
https://github.com/py-pdf/pypdf/pull/4188
https://github.com/py-pdf/pypdf/releases/tag/6.20.1
https://github.com/py-pdf/pypdf/security/advisories/GHSA-9mx8-4j7g-633p

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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