Vulnerabilities > Zulip > Zulip Server > Medium
| DATE | CVE | VULNERABILITY TITLE | RISK |
|---|---|---|---|
| 2018-04-18 | CVE-2018-9986 | Cross-site Scripting vulnerability in Zulip Server In Zulip Server versions before 1.7.2, there were XSS issues with the frontend markdown processor. | 4.3 |
| 2017-11-27 | CVE-2017-0910 | Improper Authentication vulnerability in Zulip Server In Zulip Server before 1.7.1, on a server with multiple realms, a vulnerability in the invitation system lets an authorized user of one realm on the server create a user account on any other realm. | 4.0 |
| 2017-06-02 | CVE-2017-0896 | Missing Authorization vulnerability in Zulip Server Zulip Server 1.5.1 and below suffer from an error in the implementation of the invite_by_admins_only setting in the Zulip group chat application server that allowed an authenticated user to invite other users to join a Zulip organization even if the organization was configured to prevent this. | 6.5 |
| 2017-03-28 | CVE-2017-0881 | Incorrect Authorization vulnerability in Zulip Server An error in the implementation of an autosubscribe feature in the check_stream_exists route of the Zulip group chat application server before 1.4.3 allowed an authenticated user to subscribe to a private stream that should have required an invitation from an existing member to join. | 4.0 |