DISPUTED SQL injection vulnerability in index.php in ATutor 1.5.3 allows remote attackers to execute arbitrary SQL commands via the fid parameter. NOTE: this issue has been disputed by the vendor, who states "The mentioned SQL injection vulnerability is not possible." However, the relevant source code suggests that this issue may be legitimate, and the parameter is cleansed in 1.5.3.1.

Multiple cross-site scripting (XSS) vulnerabilities in ATutor 1.5.3 allow remote attackers to inject arbitrary web script or HTML via the (1) lang parameter in (a) indexlist.php and (2) year, (3) month, and (4) day parameter in (b) registration.php.