Bug 2512854 - CVE-2026-71852 python-pypdf: pypdf: Denial of Service via crafted PDF with large CID font width ranges [fedora-all]
Summary: CVE-2026-71852 python-pypdf: pypdf: Denial of Service via crafted PDF with la...
Keywords:
Status: CLOSED RAWHIDE
Alias: None
Product: Fedora
Classification: Fedora
Component: python-pypdf
Version: rawhide
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Davide Cavalca
QA Contact:
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: 2026-08-11 07:11 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2026-08-11 07:11:37 UTC
Type: ---
Embargoed:

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Description Ganesh 2026-08-09 04:43:41 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 Tadej Janež 2026-08-11 07:11:37 UTC 
Version 6.15.0 is in rawhide.

For Fedora 44/43, I'm reluctant to upgrade them since it would be upgrading 2 major versions (from 4.2.0 to 6.15.0) in a stable release.
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