Cross-site scripting (XSS) vulnerability in mod_lettermansubscribe.php in the Letterman Subscriber (mod_letterman) before 1.2.5 module for Joomla! allows remote attackers to inject arbitrary web script or HTML via the Itemid parameter.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.042
EPSS Ranking 88.3%