Bug 2512855 - CVE-2026-71852 python-PyPDF2: pypdf: Denial of Service via crafted PDF with large CID font width ranges [fedora-all]
Summary: CVE-2026-71852 python-PyPDF2: pypdf: Denial of Service via crafted PDF with l...
Keywords:
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: python-PyPDF2
Version: 45
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Ranjan Maitra
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["1a670299-072c-4dd1-aa3a-3...
Depends On:
Blocks: CVE-2026-71852
TreeView+ depends on / blocked
 
Reported: 2026-08-09 04:43 UTC by Ganesh
Modified: 2026-08-17 15:49 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:

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Description Ganesh 2026-08-09 04:43:45 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, a crafted PDF can cause long runtimes and large memory consumption when pypdf/_font.py function Font._collect_cid_character_widths expands unusually large CID font /W width ranges or excessive width entries during text extraction. This issue is fixed in 6.15.0.
Comment 1 Aoife Moloney 2026-08-17 15:49:31 UTC 
This bug appears to have been reported against 'rawhide' during the Fedora Linux 45 development cycle.
Changing version to 45.
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