Description

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.

INFO

Published Date :

2026-03-20T09:09:12.831Z

Last Modified :

2026-03-20T18:07:16.458Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-33123 vulnerability.

Vendors Products
Py-pdf
  • Pypdf
Pypdf Project
  • Pypdf
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-33123.

URL Resource
https://github.com/py-pdf/pypdf/pull/3686 cve-icon cve-icon cve-icon
https://github.com/py-pdf/pypdf/releases/tag/6.9.1 cve-icon cve-icon cve-icon
https://github.com/py-pdf/pypdf/security/advisories/GHSA-qpxp-75px-xjcp cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-33123 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-33123 cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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Detailed values of each vector for above chart.
Attack Vector
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User Interaction
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Confidentiality Impact
Integrity Impact
Availability Impact