CVE-2024-40748

CVE-2024-40748 is a cross-site scripting (XSS) vulnerability stemming from a lack of output escaping in the id attribute of menu lists within the Joomla core. Classified under CWE-79, it was published on 2025-01-07 and carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N), highlighting its potential for high confidentiality impact.

The vulnerability can be exploited over the network by unauthenticated attackers requiring low complexity and no user interaction. Exploitation enables attackers to inject malicious scripts via the unescaped id attribute, potentially leading to the theft of sensitive user data or session information through reflected or stored XSS attacks.

Mitigation details are outlined in the Joomla Security Centre advisory available at https://developer.joomla.org/security-centre/955-20250102-core-xss-vector-in-the-id-attribute-of-menu-lists.html.