CVE-2026-113792
Severity not reportedData quality: partial.
Some fields were not provided by the source.
pypdf is a free and open-source pure-python PDF library.
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.
CVSS
—
Awaiting analysis by NVD
Timeline (UTC)
Published: 2026-10-21 16:17
Modified: 2026-10-23 16:16
NVD status: Undergoing Analysis
Last synced 1 day ago
Verified against the source API 2026-10-27 07:05 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/py-pdf/pypdf/commit/c9c35b4471c2eb5fe078094f6c816e69d4ed25a0 security-advisories@github.com
- https://github.com/py-pdf/pypdf/pull/4188 security-advisories@github.com
- https://github.com/py-pdf/pypdf/releases/tag/6.20.1 security-advisories@github.com
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-qfv9-64jg-mh7p security-advisories@github.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:05 UTC · record ↗