Craft CMS Code Execution

Remote code execution in Craft CMS 5 allows authenticated Control Panel users with basic access (including non-admin roles like Author or Editor) to execute arbitrary code by injecting malicious Twig templates through condition rule parameters. The vulnerability exploits an unsandboxed template rendering function that bypasses all security hardening settings, affecting versions prior to 5.9.9 and 4.17.4. No patch is currently available for this HIGH severity vulnerability.

SQL injection in Craft CMS ElementSearchController allows authenticated control panel users to execute arbitrary SQL queries and extract complete database contents through the criteria[where] and criteria[orderBy] parameters. The vulnerability exists because a previous SQL injection fix applied to ElementIndexesController was never implemented in this endpoint. An attacker with any control panel user account can exploit this via boolean-based blind injection without requiring administrative privileges.

Reflected XSS in Craft CMS versions before 5.9.7 and 4.17.3 allows remote attackers to execute arbitrary JavaScript in users' browsers via malicious return URLs that bypass insufficient sanitization. The vulnerability exists because the patch for a prior issue relied on strip_tags() to filter URLs, which fails to block dangerous URL schemes like javascript:. An attacker can craft a malicious link that, when clicked by an authenticated user, steals session cookies or performs actions on their behalf.