Vulnerability 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.
Related Weaknesses (CWE)
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
FAQ
What is CVE-2026-113793?
CVE-2026-113793 is a documented vulnerability. 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 p...
How severe is CVE-2026-113793?
CVSS scoring is not yet available for CVE-2026-113793. Check NVD for updates.
Is there a patch for CVE-2026-113793?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.