CVE-2026-105090

Formbricks versions before 5.4.4 and 6 before 6.0.1 are vulnerable to stored XSS due to an insufficient permission check in the Custom Head Scripts feature. A workspace member with only readWrite permissions can bypass the intended Manage role restriction to configure scripts. These scripts execu...

EUVD-2026-91874

Formbricks before 5.4.4 and 6 before 6.0.1 allows stored XSS. The survey-level Custom Head Scripts feature did not enforce the documented Manage permission boundary. A workspace member holding only readWrite permission could configure Custom Head Scripts on a survey, an operation the documentatio...