Executive brief
FoxCMS, a content management system, contains a security flaw that allows attackers to execute malicious scripts in a user's browser. By tricking a user into clicking a specially crafted link, an attacker could potentially steal login credentials, hijack user sessions, or perform unauthorized actions on behalf of the user. This poses a significant risk to the confidentiality and integrity of user accounts and site data.
Technical details
A reflected Cross-Site Scripting (XSS) vulnerability exists in FoxCMS version 1.2.6 within the '/index.php/plus' endpoint. The application fails to properly neutralize user-supplied input before including it in the generated web page (CWE-79). An unauthenticated remote attacker can exploit this by sending a crafted URL to a victim. If the victim visits the link, the attacker's malicious JavaScript will execute in the context of the victim's browser session, potentially leading to session hijacking or unauthorized data access. A proof-of-concept has been identified in public disclosures.
Affected products
- FoxCMS FoxCMS 1.2.6
Timeline
- 2025-08-27: advisory: NVD Published Date
- 2025-08-27: other: CISA-ADP assessment provided