MantisBT version 1.2.18 (and older versions) are affected by multiple security issues. All installations that are currently running any 1.2.x version are strongly advised to upgrade to MantisBT 1.2.19.
This release resolves 5 security issues:
- #17938/CVE-2014-9571: XSS in install.php
- #17939/CVE-2014-9572: Improper Access Control in install.php
- #17940/CVE-2014-9573: SQL Injection in manage_user_page.php
- #17984/CVE-2014-9624: CAPTCHA bypass
- #17997/CVE-2015-1042: URL redirection issue
Upgrade to the latest version of MantisBT (these issues were fixed in version 1.2.19).