CVE-2026-0990
A flaw was found in libxml2, an XML parsing library. This uncontrolled recursion vulnerability occurs in the xmlCatalogXMLResolveURI function when an XML catalog contains a delegate URI entry that references itself. A remote attacker could exploit this configuration-dependent issue by providing a specially crafted XML catalog, leading to infinite recursion and call stack exhaustion. This ultimately results in a segmentation fault, causing a Denial of Service (DoS) by crashing affected applications.
- Score
- CVSS 3.1 5.9 Medium
- Status
- Analyzed - secalert@redhat.com
- Published
- 2026-01-15
- Last modified
- 2026-09-01
- Weaknesses
- CWE-674
Affected products
- Aix (Ibm)
- Vios (Ibm)
- Enterprise Linux (Redhat)
- Hardened Images (Redhat)
- Hummingbird (Redhat)
- Jboss Core Services (Redhat)
- Openshift (Redhat)
- Openshift Container Platform (Redhat)
- Libxml2 (Xmlsoft)
References
- https://access.redhat.com/errata/RHSA-2026:7519
- https://access.redhat.com/security/cve/CVE-2026-0990
- https://bugzilla.redhat.com/show_bug.cgi?id=2429959
- https://gitlab.gnome.org/GNOME/libxml2/-/issues/1018
