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Fedora 43 mingw-expat Update Recognizes Severe Denial of Service Issue

fedora
Calendar Grey May 21, 2026
Dist Fedora Esm H88
Update for Fedora 43 applying expat-2.8.1 to address denial of service via crafted XML.
Update to expat-2.8.1.

Summary

This is expat, the C library for parsing XML, written by James Clark. Expat

is a stream oriented XML parser. This means that you register handlers with

the parser prior to starting the parse. These handlers are called when the

parser discovers the associated structures in the document being parsed. A

start tag is an example of the kind of structures for which you may

register handlers.

Update Information:

Update to expat-2.8.1.

Topics%20covered

Topics Covered

security advisory denial of service fedora update vulnerability mingw-expat

Change Log

* Tue May 12 2026 Sandro Mani - 2.8.1-1 - Update to 2.8.1

References


[ 1 ] Bug #2459021 - CVE-2026-41080 mingw-expat: libexpat: Denial of Service via hash flooding with crafted XML [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2459021

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-9cf92027ec' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

Severity
important
Lowest
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Critical

Name: mingw-expat
Product: Fedora 43
Version: 2.8.1
Release: 1.fc43
URL: http://www.libexpat.org/
Summary: MinGW Windows port of expat XML parser library

Topics%20covered

Topics Covered

security advisory denial of service fedora update vulnerability mingw-expat

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