xmlfile.py in aptoncd 0.1 allows local users to overwrite arbitrary files via a symlink attack on the /tmp/aptoncd temporary file.
https://exchange.xforce.ibmcloud.com/vulnerabilities/44756
https://bugs.gentoo.org/show_bug.cgi?id=235770
http://www.securityfocus.com/bid/30882
http://www.openwall.com/lists/oss-security/2008/10/30/2