JForum v2.8.0 was discovered to contain a Cross-Site Request Forgery (CSRF) via http://target_host:port/jforum-2.8.0/jforum.page, which allows attackers to arbitrarily add admin accounts.

jforum

ViewCommon.java in JForum2 2.7.0 allows XSS via a user signature.

jforum

In JForum 2.1.8, an unauthenticated, remote attacker can enumerate whether a user exists by using the "create user" function. If a register/check/username?username= request corresponds to a username that exists, then an "is already in use" error is produced. NOTE: this product is discontinued.

jforum

Cross-site request forgery (CSRF) vulnerability in admBase/login.page in the Admin module in JForum allows remote attackers to hijack the authentication of administrators for requests that change the user group permissions of arbitrary users via a groupsSave action.