CVE-2022-31168

Name of the Vulnerable Software and Affected Versions Zulip Server versions 5.4 and earlier

Description The issue arises from an incorrect authorization check in Zulip Server, allowing a member of an organization to craft an API call that grants organization administrator privileges to one of their bots. Members who don’t own any bots and lack permission to create them can’t exploit this issue.

Recommendations For Zulip Server versions 5.4 and earlier, update to Zulip Server 5.5 to fix the issue. As a temporary workaround, an organization administrator can restrict the Who can create bots permission to administrators only, and change the ownership of existing bots.