Executive brief
Cotonti is a PHP content management framework used to build websites. The contact form plugin fails to validate anti-forgery tokens, allowing attackers to forge contact form submissions from victim accounts. An attacker can trick an authenticated user into visiting a malicious webpage that auto-submits contact forms with attacker-controlled content, which the administrator receives as legitimate messages from the victim.
Technical details
The contact plugin's submission handler fails to validate CSRF tokens, enabling cross-site request forgery attacks. An attacker can craft a malicious webpage that auto-submits a contact form to the vulnerable Cotonti instance, causing an authenticated victim's browser to send forged messages attributed to the victim. This requires the victim to be authenticated and to visit the attacker-controlled page.
Affected products
- Cotonti Cotonti through 1.0.0
Timeline
- 2026-09-18: disclosed