WordPress <= 2.6.1 - SQL Truncation Vulnerability #2

The attackers can change an arbitrary user’s password to a random value by registering a similar username and then requesting a password reset, related to a “SQL column truncation vulnerability.”, because this WordPress does not properly handle MySQL warnings about insertion of username strings that exceed the maximum column width of the user_login column, and does not properly handle space characters when comparing usernames.

Solution

           Update WordPress.