CVSS 3.1 Score 4.3 of 10 (medium)


Published Jan 25, 2024
Updated: Jan 31, 2024
CWE ID 862


CVE-2024-21630 is a vulnerability that affects version 8.0 of Zulip, an open-source team collaboration tool. This vulnerability is similar to CVE-2023-32677 but specifically applies to multi-use invitations instead of single-use invitation links. It occurs when non-admins are allowed to invite users and create multi-use invitations while only admins can invite users to streams. However, this vulnerability does not allow users to invite new users to arbitrary streams, only to streams that the inviter can already see. The issue is resolved in version 8.1, but as a workaround, administrators can limit sending invitations to users who also have permission to add users to streams. The potential danger of this vulnerability is rated as medium severity with a base score of 4.3 out of 10, indicating a low privilege requirement and no user interaction necessary for exploitation.

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