bbPress 2.5.5 is available for download. This release fixes three potential security vulnerabilities reported by J.D. Grimes. Users should update as soon as possible as all previous 2.x versions are vulnerable. bbPress 2.5.5 was released within nearly 24 hours of being notified of the vulnerabilities. The patches have also been applied to the 2.6 development branch that will soon have a beta release.

Source: WP Tavern