CVE-2026-0989
Libxml2: unbounded relaxng include recursion leading to stack overflow
- State
- Published
- Severity
- 3.7 Low
- Published
- Jan 15, 2026
- Updated
- Sep 1, 2026
- Reserved
- Jan 15, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 3.7 Low | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L | redhat |
Weaknesses
- CWE-674 Uncontrolled Recursion
Affected Products
| Product | Versions |
|---|---|
Red Hat Hardened ImagesRed Hat |
|
Red Hat Enterprise Linux 10Red Hat | |
Red Hat Enterprise Linux 6Red Hat | |
Red Hat Enterprise Linux 7Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 9Red Hat | |
Red Hat JBoss Core ServicesRed Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat |
References
- RHSA-2026:7519vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-0989vdb-entry
- RHBZ#2429933issue-tracking
- https://gitlab.gnome.org/GNOME/libxml2/-/issues/998
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