Bug 2468684 (CVE-2026-8177) - CVE-2026-8177 perl-XML-LibXML: XML::LibXML: Denial of Service via truncated UTF-8 in XML node names
Summary: CVE-2026-8177 perl-XML-LibXML: XML::LibXML: Denial of Service via truncated U...
Keywords:
Status: NEW
Alias: CVE-2026-8177
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-10 22:01 UTC by OSIDB Bzimport
Modified: 2026-09-17 16:47 UTC (History)
17 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 RHSA-2026:39547 0 None None None 2026-07-14 23:25:26 UTC
Red Hat Product Errata RHSA-2026:39553 0 None None None 2026-07-14 23:59:11 UTC
Red Hat Product Errata RHSA-2026:39878 0 None None None 2026-07-15 12:02:27 UTC
Red Hat Product Errata RHSA-2026:68632 0 None None None 2026-09-17 12:30:32 UTC
Red Hat Product Errata RHSA-2026:68685 0 None None None 2026-09-17 15:18:20 UTC
Red Hat Product Errata RHSA-2026:68688 0 None None None 2026-09-17 15:58:20 UTC
Red Hat Product Errata RHSA-2026:68693 0 None None None 2026-09-17 16:47:03 UTC

Description OSIDB Bzimport 2026-05-10 22:01:16 UTC 
XML::LibXML versions through 2.0210 for Perl read out-of-bounds heap memory when parsing XML node names containing truncated UTF-8 byte sequences.

A node name ending in the middle of a multi byte UTF-8 sequence causes the parser to read past the end of the input string into adjacent heap memory.

Any Perl process that passes attacker controlled strings to XML::LibXML's DOM node-name methods can reach this path on the default API. The likely consequence is a crash, causing denial of service.
Comment 2 errata-xmlrpc 2026-07-14 23:25:26 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:39547 https://access.redhat.com/errata/RHSA-2026:39547
Comment 3 errata-xmlrpc 2026-07-14 23:59:10 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:39553 https://access.redhat.com/errata/RHSA-2026:39553
Comment 4 errata-xmlrpc 2026-07-15 12:02:27 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:39878 https://access.redhat.com/errata/RHSA-2026:39878
Comment 5 Jon Orris 2026-09-17 12:30:30 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:68632 https://access.redhat.com/errata/RHSA-2026:68632
Comment 6 Jon Orris 2026-09-17 15:18:19 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:68685 https://access.redhat.com/errata/RHSA-2026:68685
Comment 7 Jon Orris 2026-09-17 15:58:18 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:68688 https://access.redhat.com/errata/RHSA-2026:68688
Comment 8 Jon Orris 2026-09-17 16:47:02 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:68693 https://access.redhat.com/errata/RHSA-2026:68693
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