{"id":"CVE-2024-21630","summary":"Zulip non-admins can invite new users to streams they would not otherwise be able to add existing users to","details":"Zulip is an open-source team collaboration tool. A vulnerability in version 8.0 is similar to CVE-2023-32677, but applies to multi-use invitations, not single-use invitation links as in the prior CVE. Specifically, it applies when the installation has configured non-admins to be able to invite users and create multi-use invitations, and has also configured only admins to be able to invite users to streams. As in CVE-2023-32677, this does not let users invite new users to arbitrary streams, only to streams that the inviter can already see. Version 8.1 fixes this issue. As a workaround, administrators can limit sending of invitations down to users who also have the permission to add users to streams.","modified":"2026-04-10T05:08:57.709773Z","published":"2024-01-25T19:30:09.106Z","related":["GHSA-87p9-wprh-7rm6","GHSA-mrvp-96q6-jpvc"],"database_specific":{"cna_assigner":"GitHub_M","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/21xxx/CVE-2024-21630.json","cwe_ids":["CWE-862"]},"references":[{"type":"WEB","url":"https://zulip.com/help/configure-who-can-invite-to-streams"},{"type":"WEB","url":"https://zulip.com/help/restrict-account-creation#change-who-can-send-invitations"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/21xxx/CVE-2024-21630.json"},{"type":"ADVISORY","url":"https://github.com/zulip/zulip/security/advisories/GHSA-87p9-wprh-7rm6"},{"type":"ADVISORY","url":"https://github.com/zulip/zulip/security/advisories/GHSA-mrvp-96q6-jpvc"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-21630"},{"type":"FIX","url":"https://github.com/zulip/zulip/commit/0df7bd71f32f3b772e2646c6ab0d60c9b610addf"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/zulip/zulip","events":[{"introduced":"0a7d3d3fe28bc1abc931e39fe2d7083798310a21"},{"fixed":"0df7bd71f32f3b772e2646c6ab0d60c9b610addf"}]}],"versions":["8.0","8.0-beta1","8.0-beta2","8.0-dev"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-21630.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"}]}