VulnerabilityAnalyzed

CVE-2026-0989

This may lead to stack exhaustion and application crashes, creating a denial-of-service risk.

LOW 3.7EPSS 0.50%

Does this matter?

Lower severity and a low EPSS score (0.50%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 3.1: 3.7 LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS: 0.50% probability · 41th percentile
CISA KEV: Not listed
Weakness: CWE-674
Affected: xmlsoft/libxml2 · redhat/hardened images · redhat/jboss core services · redhat/openshift container platform · redhat/enterprise linux · ibm/vios · ibm/aix
Source: secalert@redhat.com

References

https://access.redhat.com/errata/RHSA-2026:7519Third Party Advisory
https://access.redhat.com/security/cve/CVE-2026-0989Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2429933Issue Tracking, Third Party Advisory
https://gitlab.gnome.org/GNOME/libxml2/-/issues/998Exploit, Issue Tracking, Mitigation, Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.