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Threat Entry
Updated 2026-01-16
CVE-2026-0990 - Red Hat OpenShift Container Platform 4 Plugin
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.
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Red Hat OpenShift Container Platform 4
CVE-2026-0990
Risk Score
Threat Entry
Updated 2026-01-16
CVE-2026-0989 - Red Hat OpenShift Container Platform 4 Plugin
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 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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Red Hat OpenShift Container Platform 4
CVE-2026-0989
Risk Score
Threat Entry
Updated 2026-01-16
CVE-2026-0992 - Red Hat OpenShift Container Platform 4 Plugin
A flaw was found in the libxml2 library. This uncontrolled resource consumption vulnerability occurs when processing XML catalogs that contain repeated elements pointing to the same downstream catalog. A remote attacker can exploit this by supplying crafted catalogs, causing the parser to redundantly traverse catalog chains. This leads to excessive CPU consumption and degrades application availability, resulting in a denial-of-service condition.
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Red Hat OpenShift Container Platform 4
CVE-2026-0992
Risk Score