Bug 2493317 - CVE-2026-56412 mingw-expat: libexpat: Use-after-free vulnerability due to improper handling of XML CDATA sections [fedora-43]
Summary: CVE-2026-56412 mingw-expat: libexpat: Use-after-free vulnerability due to imp...
Keywords:
Status: ON_QA
Alias: None
Product: Fedora
Classification: Fedora
Component: mingw-expat
Version: 43
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Richard W.M. Jones
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["7d2cc953-a619-44bf-b4fd-a...
Depends On:
Blocks: CVE-2026-56412
TreeView+ depends on / blocked
 
Reported: 2026-06-26 00:42 UTC by subhro
Modified: 2026-06-28 01:51 UTC (History)
2 users (show)

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

Attachments (Terms of Use)

Description subhro 2026-06-26 00:42:23 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.
Comment 1 Fedora Update System 2026-06-27 05:40:29 UTC 
FEDORA-2026-6666907a26 (mingw-expat-2.8.2-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-6666907a26
Comment 2 Fedora Update System 2026-06-27 05:40:38 UTC 
FEDORA-2026-3cb1034453 (mingw-expat-2.8.2-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-3cb1034453
Comment 3 Fedora Update System 2026-06-28 01:34:28 UTC 
FEDORA-2026-3cb1034453 has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-3cb1034453`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-3cb1034453

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
Comment 4 Fedora Update System 2026-06-28 01:51:02 UTC 
FEDORA-2026-6666907a26 has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-6666907a26`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-6666907a26

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
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