Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Opencast 2.3.2 and older versions are vulnerable to script injections through media and metadata in the player and media module resulting in arbitrary code execution, fixed in 2.3.3 and 3.0.
CWE-74 - Injection
Listed as the number one web application security risk on the 'OWASP Top Ten', injection attacks are widespread and dangerous, especially in legacy applications. Injection attacks are a class of vulnerabilities in which an attacker injects untrusted data into a web application that gets processed by an interpreter, altering the program's execution. This can result in data loss/theft, loss of data integrity, denial of service, and even compromising the entire system.