CVE-2026-115580
Severity not reportedData quality: awaiting analysis.
NVD has not completed analysis, so CVSS and affected-product data may be missing or change.
pypdf is a free and open-source pure-python PDF library.
pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an attacker can craft a PDF with a standard cross-reference table whose declared entry count exceeds what the file can contain, causing excessive processing and long runtimes when the file is opened. This issue is fixed in version 6.21.2.
CVSS
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Awaiting analysis by NVD
Timeline (UTC)
Published: 2026-10-23 20:17
Modified: 2026-10-29 18:17
NVD status: Awaiting Analysis
Last synced 12 hours ago
Verified against the source API 2026-10-29 18:17 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/a3061e34b169d34478d520f5f049c53cfb1482b2 security-advisories@github.com
- https://github.com/py-pdf/pypdf/pull/4239 security-advisories@github.com
- https://github.com/py-pdf/pypdf/releases/tag/6.21.2 security-advisories@github.com
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-gmh7-3g9r-mjh5 security-advisories@github.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-29 18:17 UTC · record ↗