Vulnerabilities > Zulip > Zulip Server > 1.5.1
| DATE | CVE | VULNERABILITY TITLE | RISK |
|---|---|---|---|
| 2020-04-20 | CVE-2020-9444 | Improper Restriction of Rendered UI Layers or Frames vulnerability in Zulip Server Zulip Server before 2.1.3 allows reverse tabnabbing via the Markdown functionality. | 5.8 |
| 2020-04-20 | CVE-2020-10935 | Cross-site Scripting vulnerability in Zulip Server Zulip Server before 2.1.3 allows XSS via a Markdown link, with resultant account takeover. | 3.5 |
| 2019-09-18 | CVE-2019-16215 | Unspecified vulnerability in Zulip Server The Markdown parser in Zulip server before 2.0.5 used a regular expression vulnerable to exponential backtracking. | 6.5 |
| 2018-04-18 | CVE-2018-9999 | Cross-site Scripting vulnerability in Zulip Server In Zulip Server versions before 1.7.2, there was an XSS issue with user uploads and the (default) LOCAL_UPLOADS_DIR storage backend. | 3.5 |
| 2018-04-18 | CVE-2018-9990 | Cross-site Scripting vulnerability in Zulip Server In Zulip Server versions before 1.7.2, there was an XSS issue with stream names in topic typeahead. | 4.3 |
| 2018-04-18 | CVE-2018-9987 | Cross-site Scripting vulnerability in Zulip Server In Zulip Server versions 1.5.x, 1.6.x, and 1.7.x before 1.7.2, there was an XSS issue with muting notifications. | 4.3 |
| 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 |