Bug 2491354 (CVE-2026-6653) - CVE-2026-6653 libxml2: mingw-libxml2: libxml2: Denial of Service via crafted XML input due to use-after-free
Summary: CVE-2026-6653 libxml2: mingw-libxml2: libxml2: Denial of Service via crafted ...
Keywords:
Status: NEW
Alias: CVE-2026-6653
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-22 14:02 UTC by OSIDB Bzimport
Modified: 2026-08-31 12:14 UTC (History)
27 users (show)

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

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2026:61499 0 None None None 2026-08-31 12:14:34 UTC
Red Hat Product Errata RHSA-2026:61247 0 None None None 2026-08-31 04:42:36 UTC

Description OSIDB Bzimport 2026-06-22 14:02:05 UTC 
Use After Free in libxml2's xmlParseInternalSubset from GNOME libxml2 version 2.9.11 to 2.11.0 allows a remote attacker to cause a denial-of-service via maliciously crafted XML input with improper entity resolution handling.
Comment 3 errata-xmlrpc 2026-08-31 04:42:33 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:61247 https://access.redhat.com/errata/RHSA-2026:61247
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