So it turns out the attempted fix for CVE-2013-2009 was incomplete. To quote reddit: "Erm, you forgot about escaping markdown metachars. Here, the fixed version, edit it in: \*\^_\^\*" http://www.reddit.com/r/netsec/comments/1czzyx/update_wp_super_cache_and_w3tc_immediately_remote/c9lvxn8 And to quote the WP-Super-Cache 1.3.2 ChangeLog: += 1.3.2 = +* Any mfunc/mclude/dynamic-cached-content tags in comments are now removed. So please use CVE-2013-2011 for this issue. NOTE: this issue exists because of an incomplete fix for CVE-2013-2009. - -- Kurt Seifried Red Hat Security Response Team (SRT)