SQL injection vulnerability in search.php in PunBB 1.2.7 and 1.2.8 allows remote attackers to execute arbitrary SQL commands via the old_searches parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/22760
http://www.punbb.org/changelogs/1.2.8_to_1.2.9.txt
http://securityreason.com/securityalert/87