Tiki before 18.2, 15.7 and 12.14 has XSS via link attributes, related to lib/core/WikiParser/OutputLink.php and lib/parser/parserlib.php.
Stored XSS vulnerabilities in Tiki before 18.2, 15.7 and 12.14 allow an authenticated user injecting JavaScript to gain administrator privileges if an administrator opens a wiki page and moves the mouse pointer over a modified link or thumb image.
Cross Site Scripting (XSS) exists in Tiki before 12.13, 15.6, 17.2, and 18.1.