zulip vulnerabilities and exploits

3.5
CVSSv2
CVE-2018-9999

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

ZulipZulip Server
3.5
CVSSv2
CVE-2019-16216

Zulip server before 2.0.5 incompletely validated the MIME types of uploaded files. A user who is logged into the server could upload files of certain types to mount a stored cross-site scripting attack on other logged-in users. On a Zulip server using the default local uploads...

4.3
CVSSv2
CVE-2018-9990

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

4.3
CVSSv2
CVE-2018-9986

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

4.3
CVSSv2
CVE-2018-9987

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
CVSSv2
CVE-2017-0896

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...

4
CVSSv2
CVE-2019-16215

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...

4
CVSSv2
CVE-2017-0910

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
CVSSv2
CVE-2017-0881

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...

7.2
CVSSv2
CVE-2016-5195

Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect handling of a copy-on-write (COW) feature to write to a read-only memory mapping, as exploited in the wild in October 2016, aka "Dirty...