IBM Cognos Controller 10.4.1, 10.4.2, and 11.0.0 is vulnerable to external service interaction attack, caused by improper validation of user-supplied input. A remote attacker could exploit this vulnerability to induce the application to perform server-side DNS lookups or HTTP requests to arbitrary domain names. By submitting suitable payloads, an attacker can cause the application server to attack other systems that it can interact with. IBM X-Force ID: 220903.

IBM Cognos Controller 10.4.1, 10.4.2, and 11.0.0 is vulnerable to injection attacks in application logging by not sanitizing user provided data. IBM X-Force ID: 251463.

IBM Cognos Controller 10.4.1, 10.4.2, and 11.0.0 could allow a remote user to enumerate usernames due to differentiating error messages on existing usernames. IBM X-Force ID: 199181.

IBM Cognos Controller 10.4.1, 10.4.2, and 11.0.0 could allow a remote attacker to obtain sensitive information when a stack trace is returned in the browser. IBM X-Force ID: 245403.