Apache CXF's EndpointReferenceUtils and W3CMultiSchemaFactory classes construct a SAXParserFactory without the necessary JAXP hardening configurations, enabling out-of-band (OOB) external entity resolution. Users are recommended to upgrade to versions 4.2.2 or 4.1.7 or 3.6.12, which fix this issue.
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49875.json
https://lists.apache.org/thread/3kb9w5bg90xcp06fccoz9k3gpsvyy79o
https://bugzilla.redhat.com/show_bug.cgi?id=2488309
https://access.redhat.com/security/cve/CVE-2026-49875
https://access.redhat.com/errata/RHSA-2026:37390