CVE-2023-28820 Information

Description

Concrete CMS (previously concrete5) before 9.1 is vulnerable to stored XSS in RSS Displayer via the href attribute because the link element input was not sanitized.

Reference

https://github.com/concretecms/concretecms/releases https://www.concretecms.org/about/project-news/security/concrete-cms-security-advisory-2023-04-20