Affected: xmldom, Red Hat Developer Hub 1.8, Red Hat Developer Hub 1.9, Red Hat OpenShift Container Platform 4.20, Red Hat OpenShift Container Platform 4.21, Red Hat Build of Podman Desktop, Red Hat Fuse 7, Red Hat OpenShift AI (RHOAI), Red Hat Self-service automation portal 2

xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) `DOMParser` and `XMLSerializer` module. In @xmldom/xmldom prior to versions 0.9.10 and 0.8.13 and xmldom version 0.6.0 and prior, the package serializes DocumentType node fields (internalSubset, publicId, systemId) verbatim without any escaping or validation. When these fields are set programmatically to attacker-controlled strings, XMLSerializer.serializeToString can produce output where the DOCTYPE declaration is terminated early and arbitrary markup appears outside it. This issue has been patched in versions @xmldom/xmldom versions 0.9.10 and 0.8.13.