jscript.c in Exuberant Ctags 5.8 allows remote attackers to cause a denial of service (infinite loop and CPU and disk consumption) via a crafted JavaScript file.
http://www.ubuntu.com/usn/USN-2371-1
http://www.openwall.com/lists/oss-security/2014/09/29/40
http://www.debian.org/security/2014/dsa-3042