Bug 2449585 (CVE-2026-33123) - CVE-2026-33123 pypdf: pypdf: Denial of Service due to excessive resource consumption from crafted PDF
Summary: CVE-2026-33123 pypdf: pypdf: Denial of Service due to excessive resource cons...
Keywords:
Status: NEW
Alias: CVE-2026-33123
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-20 11:02 UTC by OSIDB Bzimport
Modified: 2026-03-20 21:10 UTC (History)
30 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-03-20 11:02:25 UTC 
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.
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