CVE ID | Published | Description | Score | Severity |
---|---|---|---|---|
Zulip is an open-source team collaboration tool with topic-based threading that combines email and chat. Users who used to be subscribed to a private stream and have been removed from it since retain the ability to edit messages/topics, move messages to other streams, and delete messages that they used to have access to, if other relevant organization permissions allow these actions. For example, a user may be able to edit or delete their old messages they posted in such a private stream. An administrator will be able to delete old messages (that they had access to) from the private stream. This issue was fixed in Zulip Server version 7.3. | 6.5 |
Medium |
||
An issue was discovered in Zulip Server before 3.4. A bug in the implementation of the all_public_streams API feature resulted in guest users being able to receive message traffic to public streams that should have been only accessible to members of the organization. | 5.3 |
Medium |
||
An issue was discovered in Zulip Server before 3.4. A bug in the implementation of the can_forge_sender permission (previously is_api_super_user) resulted in users with this permission being able to send messages appearing as if sent by a system bot, including to other organizations hosted by the same Zulip installation. | 4.3 |
Medium |
||
An issue was discovered in Zulip Server before 3.4. A bug in the implementation of replies to messages sent by outgoing webhooks to private streams meant that an outgoing webhook bot could be used to send messages to private streams that the user was not intended to be able to send messages to. | 4.3 |
Medium |
||
Zulip Server before 2.1.5 allows reflected XSS via the Dropbox webhook. | 6.1 |
Medium |
||
Zulip Server before 2.1.5 allows reverse tabnapping via a topic header link. | 5.4 |
Medium |
||
Zulip Server before 2.1.5 has Incorrect Access Control because 0198_preregistrationuser_invited_as adds the administrator role to invitations. | 7.5 |
High |
||
Zulip Server 2.x before 2.1.7 allows eval injection if a privileged attacker were able to write directly to the postgres database, and chose to write a crafted custom profile field value. | 8.8 |
High |
||
Zulip Server before 2.1.3 allows XSS via the modal_link feature in the Markdown functionality. | 6.1 |
Medium |
||
Zulip Server before 2.1.3 allows reverse tabnabbing via the Markdown functionality. | 6.1 |
Medium |
||
Zulip Server before 2.1.3 allows XSS via a Markdown link, with resultant account takeover. | 5.4 |
Medium |
||
The Markdown parser in Zulip server before 2.0.5 used a regular expression vulnerable to exponential backtracking. A user who is logged into the server could send a crafted message causing the server to spend an effectively arbitrary amount of CPU time and stall the processing of future messages. | 6.5 |
Medium |
||
In Zulip Server versions before 1.7.2, there were XSS issues with the frontend markdown processor. | 6.1 |
Medium |
||
In Zulip Server versions before 1.7.2, there was an XSS issue with stream names in topic typeahead. | 6.1 |
Medium |
||
In Zulip Server versions before 1.7.2, there was an XSS issue with user uploads and the (default) LOCAL_UPLOADS_DIR storage backend. | 5.4 |
Medium |
||
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. | 8.8 |
High |
||
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. The issue affects all previously released versions of the Zulip server. | 4.3 |
Medium |