This indicates an attack attempt against a security-bypass vulnerability in WordPress.
The vulnerability is due to the software's inability to properly restrict access to its password-resetting features. A remote attacker may exploit this to reset the password of the adminstrator account in WordPress.
WordPress version 2.8.3; prior versions may also be affected.
Security Bypass: Remote attackers can bypass security checking of vulnerable systems.
Upgrade to version 2.8.4.