CMS Security Vulnerabilities

Arbitrary file deletion in Joomla! CMS com_joomlaupdate component via the autoupdate server mechanism allows remote attackers to delete files on affected servers due to insufficient input validation. The vulnerability affects all versions of Joomla! CMS through the update component and carries moderate-to-high real-world risk because file deletion can compromise system integrity, availability, and potentially enable privilege escalation or secondary attacks when combined with other weaknesses.

Improper access control in Joomla! CMS webservice endpoints allows unauthorized attackers to bypass authentication and access protected API functionality without valid credentials. Joomla! CMS versions prior to the patched release are affected. The vulnerability stems from inadequate validation of user permissions before processing webservice requests, enabling remote unauthenticated attackers to interact with restricted endpoints that should require administrative or elevated privileges.

SQL injection in Joomla CMS articles webservice endpoint allows remote attackers to execute arbitrary SQL queries through improperly constructed ORDER BY clauses, affecting all versions of Joomla CMS. The vulnerability exists in the com_content component's webservice endpoint and permits unauthenticated query manipulation. No CVSS score or patch version information is available at time of analysis, limiting severity quantification.

Joomla CMS fails to enforce authenticated user checks on the AJAX component in the administrative area, allowing potential authentication bypass and unauthorized access to sensitive functionality. Third-party developers expecting default access controls may expose administrative features to unauthenticated or unauthorized users. No CVSS score or public exploit code has been identified, but the vulnerability affects all Joomla CMS versions and requires immediate review of custom AJAX implementations that rely on implicit authentication enforcement.

Joomla CMS fails to properly escape article titles in output, enabling stored cross-site scripting (XSS) attacks across multiple locations. Attackers with article creation or editing privileges can inject malicious scripts into article titles that execute in the browsers of site visitors, potentially compromising user sessions, stealing credentials, or defacing content. The vulnerability affects all Joomla CMS versions and requires administrative action to remediate.

Cross-site scripting (XSS) in Joomla CMS multilingual associations component allows unauthenticated remote attackers to inject malicious scripts via unescaped output in the comparison view. The vulnerability affects all versions of Joomla CMS and stems from improper output encoding in the com_associations component. No CVSS score is available; however, the CWE-79 classification confirms reflected or stored XSS capability.