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5.9Medium

CVE-2026-0990Libxml2: libxml2: denial of service via uncontrolled recursion in xml catalog processing

Red Hat Red Hat Hardened Images; Red Hat Red Hat Enterprise Linux 10; Red Hat Red Hat Enterprise Linux 6; Red Hat Red Hat Enterprise Linux 7 Published: (10 months ago)

Description

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.

Weakness (CWE): CWE-674

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

VendorProductVersions
ibm aix 7.2.5 – < 7.2.5.12
ibm vios 4.1.0 – < 4.1.1.30
redhat enterprise linux 6.0
redhat hardened images —
redhat jboss core services —
redhat openshift container platform 4.0
Red Hat Red Hat Enterprise Linux 10 all versions
Red Hat Red Hat Enterprise Linux 6 all versions
Red Hat Red Hat Enterprise Linux 7 all versions
Red Hat Red Hat Enterprise Linux 8 all versions
Red Hat Red Hat Enterprise Linux 9 all versions
Red Hat Red Hat Hardened Images all versions
Red Hat Red Hat JBoss Core Services all versions
Red Hat Red Hat OpenShift AI (RHOAI) —
Red Hat Red Hat OpenShift Container Platform 4 all versions
xmlsoft libxml2 < 2.15.2

References and patches

CPE matches (NVD) (14)
  • cpe:2.3:a:redhat:hardened_images:-:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:jboss_core_services:-:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:vios:*:*:*:*:*:*:*:* ≥ 4.1.0 < 4.1.1.30
  • cpe:2.3:a:ibm:vios:4.1.2.0:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:aix:*:*:*:*:*:*:*:* ≥ 7.2.5 < 7.2.5.12
  • cpe:2.3:o:ibm:aix:*:*:*:*:*:*:*:* ≥ 7.3.2 < 7.3.3.3
  • cpe:2.3:o:ibm:aix:7.3.4:*:*:*:*:*:*:*
  • cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:* < 2.15.2

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