Bug 2508371 - CVE-2026-56407 expat: libexpat: Arbitrary code execution due to integer overflow [fedora-all]
Summary: CVE-2026-56407 expat: libexpat: Arbitrary code execution due to integer overf...
Keywords:
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: expat
Version: 45
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Tomas Korbar
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["80736bdb-3066-44c9-be12-5...
Depends On:
Blocks: CVE-2026-56407
TreeView+ depends on / blocked
 
Reported: 2026-07-29 11:12 UTC by Srikanth Balasubramanian
Modified: 2026-08-17 15:40 UTC (History)
2 users (show)

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

Attachments (Terms of Use)

Description Srikanth Balasubramanian 2026-07-29 11:12:11 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.

libexpat before 2.8.2 has an integer overflow in doProlog that is related to storeEntityValue and entity textLen.
Comment 1 Aoife Moloney 2026-08-17 15:40:14 UTC 
This bug appears to have been reported against 'rawhide' during the Fedora Linux 45 development cycle.
Changing version to 45.
Note You need to log in before you can comment on or make changes to this bug.