CVE-2026-93870: Cotonti through 1.0.0 Cross-Site Request Forgery in the Ratings Plugin AJAX Handler
Cotonti through 1.0.0 fails to validate anti-CSRF tokens in the ratings plugin AJAX handler, allowing attackers to forge ratings on behalf of authenticated users. Attackers can craft malicious pages that auto-submit POST requests to modify stored rating data when visited by logged-in users.
Affected Software
Event History
Frequently Asked Questions
Who is exposed to this issue?
Sites running Cotonti through version 1.0.0 with the ratings plugin AJAX handler available are exposed. Exploitation affects authenticated users who visit an attacker-controlled page while logged in.
What does an attacker need to exploit it?
The attacker does not need credentials or special privileges, but must induce a logged-in user to visit a malicious page. That page can automatically submit a POST request that alters stored rating data using the victim's session.
Is user interaction required?
Yes. A logged-in user must visit the malicious page for the forged rating request to be submitted.
How can administrators determine whether they are affected?
Verify whether the deployment uses Cotonti version 1.0.0 or earlier and has the ratings plugin AJAX handler enabled or reachable. The affected handler is plugins/ratings/ratings.ajax.php.