Bug 2441494 (CVE-2026-27025) - CVE-2026-27025 pypdf: pypdf: Denial of Service via crafted PDF with large font values
Summary: CVE-2026-27025 pypdf: pypdf: Denial of Service via crafted PDF with large fon...
Keywords:
Status: NEW
Alias: CVE-2026-27025
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: 2026-02-20 22:01 UTC by OSIDB Bzimport
Modified: 2026-02-20 22:40 UTC (History)
17 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-02-20 22:01:55 UTC 
pypdf is a free and open-source pure-python PDF library. Prior to 6.7.1, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes and large memory consumption. This requires parsing the /ToUnicode entry of a font with unusually large values, for example during text extraction. This vulnerability is fixed in 6.7.1.
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