CVE-2026-119204

Severity not reported

Data 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 6.21.4, pypdf can consume excessive memory while parsing a crafted PDF page tree containing many shared resources. Page-tree flattening copies page dictionary and inherited resource entries without a document-wide entry budget, allowing the crafted resource structure to cause disproportionate allocations. This issue is fixed in version 6.21.4.

CVSS

—

Awaiting analysis by NVD

Timeline (UTC)

Published: 2026-10-29 21:17

Modified: 2026-10-29 21:17

NVD status: Received

Last synced 9 hours ago

Verified against the source API 2026-10-29 21:28 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)

CWE-400

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/ea4ac663133f1b3de1d7a8f2e6fa239802fde79e security-advisories@github.com
https://github.com/py-pdf/pypdf/pull/4290 security-advisories@github.com
https://github.com/py-pdf/pypdf/releases/tag/6.21.4 security-advisories@github.com
https://github.com/py-pdf/pypdf/security/advisories/GHSA-cggf-277g-3q54 security-advisories@github.com

Data sources

NVD CVE API 2.0 — fetched 2026-10-29 21:28 UTC · record ↗

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