Low · published January 15, 2026
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.
| Product | Versions | Fixed in |
|---|---|---|
| xmlsoft/libxml2 | < 2.15.2 | 2.15.2 |
| redhat/hardened_images | all versions | — |
| redhat/jboss_core_services | all versions | — |
| redhat/openshift_container_platform | all versions | — |
| redhat/enterprise_linux | all versions | — |
| redhat/enterprise_linux | all versions | — |
| redhat/enterprise_linux | all versions | — |
| redhat/enterprise_linux | all versions | — |
| redhat/enterprise_linux | all versions | — |
| ibm/vios | ≥ 4.1.0, < 4.1.1.30 | 4.1.1.30 |
| ibm/vios | all versions | — |
| ibm/aix | ≥ 7.2.5, < 7.2.5.12 | 7.2.5.12 |
| ibm/aix | ≥ 7.3.2, < 7.3.3.3 | 7.3.3.3 |
| ibm/aix | all versions | — |