### [CVE-2024-12878](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-12878) ![](https://img.shields.io/static/v1?label=Product&message=Custom%20Block%20Builder&color=blue) ![](https://img.shields.io/static/v1?label=Version&message=0%20&color=brightgreen) ![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-79%20Cross-Site%20Scripting%20(XSS)&color=brightgreen) ### Description The Custom Block Builder WordPress plugin before 3.8.3 does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin. ### POC #### Reference - https://wpscan.com/vulnerability/827444d1-87cb-4057-827a-d802eac82cf8/ #### Github - https://github.com/20142995/nuclei-templates - https://github.com/cyb3r-w0lf/nuclei-template-collection