CVE-2026-113790
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 6.21.0, an attacker can craft a PDF containing arrays or dictionaries with many elements, causing parsing to consume large amounts of memory. This issue is fixed in version 6.21.0.
CVSS
—
Awaiting analysis by NVD
Timeline (UTC)
Published: 2026-10-21 16:17
Modified: 2026-10-28 02:17
NVD status: Undergoing Analysis
Last synced 18 hours ago
Verified against the source API 2026-10-28 11:30 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/18bd2981a74479483a0b9507602c58a63d6c9b12 security-advisories@github.com
- https://github.com/py-pdf/pypdf/pull/4218 security-advisories@github.com
- https://github.com/py-pdf/pypdf/releases/tag/6.21.0 security-advisories@github.com
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-f54x-cmq8-qg57 security-advisories@github.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-28 11:30 UTC · record ↗