On BIG-IP ASM 15.1.0-15.1.0.5, a cross-site scripting (XSS) vulnerability exists in the BIG-IP ASM Configuration utility response and blocking pages. An authenticated user with administrative privileges can specify a response page with any content, including JavaScript code that will be executed when preview is opened.
https://support.f5.com/csp/article/K12002065
https://support.f5.com/csp/article/K12002065
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-5932