Incomplete blacklist vulnerability in the teximg plugin in ikiwiki before 3.1415926 and 2.x before 2.53.4 allows context-dependent attackers to read arbitrary files via crafted TeX commands.
https://exchange.xforce.ibmcloud.com/vulnerabilities/52922
http://www.vupen.com/english/advisories/2009/2475
http://www.securityfocus.com/bid/36181
http://www.debian.org/security/2009/dsa-1875
http://secunia.com/advisories/36539