Cross-site request forgery (CSRF) vulnerability in /admin.php?c=member&m=edit&uid=1 in dayrui FineCms 5.4 allows remote attackers to change the administrator's password.
controllers/admin/Linkage.php in dayrui FineCms 5.3.0 has Cross Site Scripting (XSS) via the id or lid parameter in a c=linkage,m=import request to admin.php, because the xss_clean protection mechanism is defeated by crafted input that lacks a '<' or '>' character.
controllers/member/Api.php in dayrui FineCms 5.2.0 has SQL Injection: a request with s=member,c=api,m=checktitle, and the parameter 'module' with a SQL statement, lacks effective filtering.
v5/config/system.php in dayrui FineCms 5.2.0 has a default SYS_KEY value and does not require key regeneration for each installation, which allows remote attackers to upload arbitrary .php files via a member api swfupload action to index.php.
dayrui FineCms 5.0.9 has SQL Injection via the field parameter in an action=module, action=member, action=form, or action=related request to libraries/Template.php.