Zulip: Message edit history visible in "moves only" policy through /api/v1/messages/{id}/history

Moving single messages from public to private streams leaves them accessible

Zulip vulnerable to insufficient authorization check for edition/deletion of messages and topics in private streams by former subscribers

The Markdown parser in Zulip server before 2.0.5 used a regular expression vulnerable to exponential backtracking

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…

Cross-site scripting vulnerability in Zulip Server development branch via topic tooltip

Zulip Server before 2.1.5 allows reflected XSS via the Dropbox webhook

Zulip Server before 2.1.3 allows XSS via the modal_link feature in the Markdown functionality

Zulip Server before 2.1.3 allows reverse tabnabbing via the Markdown functionality

The image thumbnailing handler in Zulip Server versions 1.9.0 to before 2.0.8 allowed an open redirect that was visible to logged-in users

In Zulip Server versions before 1.7.2, there were XSS issues with the frontend markdown processor

In Zulip Server versions before 1.7.2, there was an XSS issue with stream names in topic typeahead

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

Zulip affected by Stored XSS in user profile modal

Zulip XSS in digest preview URL

Cross-site scripting vulnerability in Zulip Server

Zulip Server before 2.1.5 allows reverse tabnapping via a topic header link

Zulip Server before 2.1.3 allows XSS via a Markdown link, with resultant account takeover

Zulip server before 2.0.5 incompletely validated the MIME types of uploaded files

In Zulip Server versions before 1.7.2, there was an XSS issue with user uploads and the (default) LOCAL_UPLOADS_DIR storage backend

/api/v1/jwt/fetch_api_key endpoint can leak if an email address has an account in Zulip server

An issue was discovered in Zulip Server before 3.4

Zulip Server public data export contains attachments that are non-public

User uploads proxied from S3 lack `Content-Security-Policy` headers, may be served with `Content-Disposition: inline` in zulip

Zulip non-admins can invite new users to streams they would not otherwise be able to add existing users to

Stream description leaks to ex-subscribers in Zulip

An issue was discovered in Zulip Server before 3.4

An issue was discovered in Zulip Server before 3.4

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…