Medium severity6.0NVD Advisory· Published Oct 21, 2026

CVE-2026-113792

Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.20.1, calling PdfWriter.find_outline_item on a crafted PDF with a cyclic outline hierarchy can enter an infinite loop and block the current process. This issue is fixed in version 6.20.1.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Py PDF/Pypdfllm-fuzzy
Range: <6.20.1

Patches

Vulnerability mechanics

References

github.com/advisories/GHSA-qfv9-64jg-mh7pghsaADVISORY
github.com/py-pdf/pypdf/commit/c9c35b4471c2eb5fe078094f6c816e69d4ed25a0nvd
github.com/py-pdf/pypdf/pull/4188nvd
github.com/py-pdf/pypdf/releases/tag/6.20.1nvd
github.com/py-pdf/pypdf/security/advisories/GHSA-qfv9-64jg-mh7pnvd

News mentions

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cvss	0.260
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000