Bug 2442543 (CVE-2026-27628) - CVE-2026-27628 pypdf: possible infinite loop when loading circular /Prev entries in cross-reference streams
Summary: CVE-2026-27628 pypdf: possible infinite loop when loading circular /Prev entr...
Keywords:
Status: NEW
Alias: CVE-2026-27628
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: 2442636
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-02-25 04:02 UTC by OSIDB Bzimport
Modified: 2026-02-25 14:48 UTC (History)
22 users (show)

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

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-02-25 04:02:32 UTC 
pypdf is a free and open-source pure-python PDF library. Prior to 6.7.2, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires reading the file. This has been fixed in pypdf 6.7.2. As a workaround, one may apply the patch manually.
Note You need to log in before you can comment on or make changes to this bug.