A flaw was found in Exuberant Ctags in the way it handles the "-o" option. This option specifies the tag filename. A crafted tag filename specified in the command line or in the configuration file results in arbitrary command execution because the externalSortTags() in sort.c calls the system(3) function in an unsafe way.

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.

Cross-site scripting (XSS) vulnerability in the cctags module for Drupal 6.x-1.x before 6.x-1.10 and 7.x-1.x before 7.x-1.10 allows remote authenticated users with certain roles to inject arbitrary web script or HTML via unspecified vectors.