Zulip is an open source team chat and Zulip Mobile is an app for iOS and Andriod users. In Zulip Mobile through version 27.189, a crafted link in a message sent by an authenticated user could lead to credential disclosure if a user follows the link. A patch was released in version 27.190.
CWE-697 - Incorrect Comparison
The software compares two entities in a security-relevant context, but the comparison is incorrect, which may lead to resultant weaknesses.