CVE-2026-33123

pypdf is a free and open-source pure-python PDF library. Versions prior to 6.9.1 allow an attacker to craft a malicious PDF which leads to long runtimes and/or large memory usage. Exploitation requires accessing an array-based stream with many entries. This issue has been fixed in version 6.9.1.

CVSS

No CVSS.

References

Link	Resource
https://github.com/py-pdf/pypdf/pull/3686
https://github.com/py-pdf/pypdf/releases/tag/6.9.1
https://github.com/py-pdf/pypdf/security/advisories/GHSA-qpxp-75px-xjcp

Configurations

No configuration.

History

20 Mar 2026, 10:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-20 10:16

Updated : 2026-03-20 13:37

NVD link : CVE-2026-33123

Mitre link : CVE-2026-33123

CVE.ORG link : CVE-2026-33123

JSON object : View

Products Affected

No product.

CWE

CWE-400

Uncontrolled Resource Consumption

CWE-407

Inefficient Algorithmic Complexity

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CVE-2026-33123

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