Grav CVE-2026-62232

Grav CMS deployments running versions below 2.0.4 contain a critical authentication bypass that neutralizes two-factor authentication protections for any user whose password has been compromised. This vulnerability enables attackers with stolen credentials to completely bypass 2FA safeguards and gain unauthorized access to accounts, exposing sensitive content and administrative functions. Organizations using Grav CMS must immediately audit their deployments and implement defensive measures pending patch availability.

Within 24 hours, inventory all Grav CMS instances to identify versions below 2.0.4 and assess which systems contain sensitive data or administrative functions. Within 7 days, disable TOTP-based 2FA on all vulnerable instances as an interim security measure, implement IP allowlisting for administrative access, enable detailed audit logging of login events and user account modifications, and configure alerting on suspicious authentication activity. Within 30 days, maintain watch for Grav CMS 2.0.4 release, conduct testing in a non-production environment, and prepare a controlled deployment plan including mandatory password resets for all users following the upgrade.

Immediately disable TOTP 2FA across vulnerable Grav CMS instances and require password-only authentication temporarily. Implement IP allowlisting to restrict administrative access to known networks. Enable comprehensive audit logging of all authentication and account modification events with real-time alerting on suspicious activity. If available in your Grav CMS deployment, implement additional authentication layers through SSO integration with multi-factor authentication providers. Deploy WAF rules to rate-limit login attempts and restrict access to administrative panels.