Cacti provides an operational monitoring and fault management framework. Versions of Cacti prior to 1.2.27 are vulnerable to stored cross-site scripting, a type of cross-site scripting where malicious scripts are permanently stored on a target server and served to users who access a particular page. Version 1.2.27 contains a patch for the issue.
https://github.com/Cacti/cacti/security/advisories/GHSA-j868-7vjp-rp9h