Vignette StoryServer 5 and Vignette V/6 allows remote attackers to execute arbitrary TCL code via (1) an HTTP query or cookie which is processed in the NEEDS command, or (2) an HTTP Referrer that is processed in the VALID_PATHS command.
http://www.securityfocus.com/bid/7692
http://www.securityfocus.com/bid/7690
http://www.s21sec.com/es/avisos/s21sec-024-en.txt