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.
The product generates an error message that includes sensitive information about its environment, users, or associated data.
Link | Tags |
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https://www.criticalstart.com/2019/02/information-disclosure-in-jforum-2-1-x-syntax/ | third party advisory exploit |