Secunia Security Advisory – Fedora has issued an update for php-pecl-apc. This fixes a vulnerability, which can be exploited by malicious people to conduct cross-site scripting attacks.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/94393/sa41662.txt
Source: https://packetstormsecurity.com/files/94393/Secunia-Security-Advisory-41662.html

