CVE-2008-4125
The search function in phpBB 2.x provides a search_id value that leaks the state of PHP’s PRNG, which allows remote attackers to obtain potentially sensitive information, as demonstrated by a cross-application attack against WordPress, a different vulnerability than CVE-2006-0632.
Date published : 2008-09-18
http://www.suspekt.org/2008/08/17/mt_srand-and-not-so-random-numbers/