IBM Connections 5.5 and earlier is vulnerable to possible link manipulation attack that could result in the display of inappropriate background images.

IBM Connections 5.5 and earlier allows remote attackers to obtain sensitive information by reading stack traces in returned responses.

IBM Connections is vulnerable to cross-site scripting, caused by improper validation of user-supplied input. A remote attacker could exploit this vulnerability using a specially-crafted URL to execute script in a victim's Web browser within the security context of the hosting Web site, once the URL is clicked. An attacker could use this vulnerability to steal the victim's cookie-based authentication credentials.

IBM Connections 5.5 and earlier is vulnerable to possible host header injection attack that could cause navigation to the attacker's domain.

Cross-site scripting (XSS) vulnerability in the Bookmarks component in IBM Lotus Connections before 4.0 CR3 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.