CVE-2026-63684
8.8Regular Labs · Content Templater, ReReplacer, and Snippets extensions for Joomla
Multiple Regular Labs extensions for Joomla contain flaws in CSRF token and privilege validation, allowing unauthorized users to modify extension configurations and items.
Executive summary
Multiple Regular Labs Joomla extensions are vulnerable to unauthorized configuration changes and item manipulation via cross-site request forgery and access control flaws.
Vulnerability
These extensions suffer from improper access control and insufficient CSRF token validation, which can be triggered by unauthenticated attackers through user interaction or by low-privileged backend users to manipulate extension data.
Business impact
A successful exploitation of this vulnerability allows an attacker to gain unauthorized control over extension settings and content items. Given the CVSS score of 8.8, this poses a significant risk to site integrity and administrative control, potentially leading to unauthorized data modification or the injection of malicious content into the Joomla environment.
Remediation
Immediate Action: Review the official Regular Labs website for the latest version of the affected extensions and apply updates immediately to ensure that proper token and permission checks are in place.
Proactive Monitoring: Monitor Joomla access logs for suspicious administrative activity or unexpected POST requests targeting extension-specific configuration endpoints.
Compensating Controls: Deploy a Web Application Firewall (WAF) to filter incoming requests and block suspicious traffic that lacks valid CSRF tokens or originates from unauthorized sessions.
Exploitation status
Public Exploit Available: No
Analyst recommendation
The severity of this flaw necessitates immediate attention, as it grants attackers the ability to alter site configurations and extension settings. Administrators should verify their current extension versions against the affected ranges provided and apply the latest vendor patches to mitigate the risk of unauthorized backend modification.