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A flaw was identified in the RelaxNG parser of libxml2 related to how external schema inclusions are handled. The parser does not enforce a limit on inclusion depth when resolving nested <include> directives. Specially crafted or overly complex schemas can cause excessive recursion during parsing. This may lead to stack exhaustion and application crashes, creating a denial-of-service risk.
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OR
*cpe:2.3:a:ibm:vios:*:*:*:*:*:*:*:* versions from (including) 4.1.0 up to (excluding) 4.1.1.30
*cpe:2.3:a:ibm:vios:4.1.2.0:*:*:*:*:*:*:*
*cpe:2.3:o:ibm:aix:*:*:*:*:*:*:*:* versions from (including) 7.2.5 up to (excluding) 7.2.5.12
*cpe:2.3:o:ibm:aix:*:*:*:*:*:*:*:* versions from (including) 7.3.2 up to (excluding) 7.3.3.3
*cpe:2.3:o:ibm:aix:7.3.4:*:*:*:*:*:*:*
Added
CPE Configuration
OR
*cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:* versions up to (excluding) 2.15.2
Added
CPE Configuration
OR
*cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
*cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
*cpe:2.3:a:redhat:jboss_core_services:-:*:*:*:*:*:*:*
*cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
*cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*
*cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
*cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*
*cpe:2.3:a:redhat:hardened_images:-:*:*:*:*:*:*:*
Added
Reference Type
Red Hat, Inc.: https://access.redhat.com/errata/RHSA-2026:7519 Types: Third Party Advisory
Added
Reference Type
Red Hat, Inc.: https://access.redhat.com/security/cve/CVE-2026-0989 Types: Third Party Advisory
Added
Reference Type
Red Hat, Inc.: https://bugzilla.redhat.com/show_bug.cgi?id=2429933 Types: Issue Tracking, Third Party Advisory
Added
Reference Type
Red Hat, Inc.: https://gitlab.gnome.org/GNOME/libxml2/-/issues/998 Types: Exploit, Issue Tracking, Mitigation, Third Party Advisory
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New CVE Received from Red Hat, Inc.1/15/2026 10:15:52 AM
Action
Type
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Description
A flaw was identified in the RelaxNG parser of libxml2 related to how external schema inclusions are handled. The parser does not enforce a limit on inclusion depth when resolving nested <include> directives. Specially crafted or overly complex schemas can cause excessive recursion during parsing. This may lead to stack exhaustion and application crashes, creating a denial-of-service risk.
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