This vulnerability involves improper neutralization of input in the Custom Query Blocks plugin by Ronald Huereca, leading to a DOM-based XSS condition in the post-type-archive-mapping functionality. The issue affects all versions up to 5.5.0. The vulnerability allows an attacker to inject and execute arbitrary scripts in the victim's browser when they visit a crafted page. No CVSS score or vendor advisory is available, and no patch or mitigation details have been provided.

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary JavaScript in the context of the affected site, potentially leading to session hijacking, defacement, or other client-side attacks. However, there are no known exploits in the wild, and the extent of impact depends on the deployment and usage of the affected plugin.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider disabling or limiting use of the affected Custom Query Blocks plugin, especially the post-type-archive-mapping feature, to reduce exposure. Monitor vendor channels for updates and apply patches promptly once available.