CVE-2026-119208

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 6.21.3, pypdf can consume excessive time and memory when an application accesses the page count of a crafted encrypted PDF whose page tree declares a forged /Count value. Even after successful decryption, page-count retrieval trusts the unvalidated declared count instead of walking the page tree, allowing the attacker-controlled value to drive excessive work and memory use. This issue is fixed in version 6.21.3.

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/82b91951dc74496bb3efe6465434f041bb6a5e6b security-advisories@github.com
https://github.com/py-pdf/pypdf/pull/4270 security-advisories@github.com
https://github.com/py-pdf/pypdf/releases/tag/6.21.3 security-advisories@github.com
https://github.com/py-pdf/pypdf/security/advisories/GHSA-62m5-6wh8-28x7 security-advisories@github.com

Data sources

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

Learn the basics

Understanding CVEs and CVSS Scores