{"id":"CVE-2024-21630","state":"PUBLISHED","title":"Zulip non-admins can invite new users to streams they would not otherwise be able to add existing users to","description":"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.","publishedAt":"2024-01-25T19:30:09.106Z","updatedAt":"2025-05-29T15:19:04.180Z","severity":{"score":4.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["zulip zulip"],"affected":[{"vendor":"zulip","product":"zulip","versions":[{"version":"= 8.0","status":"affected"}]}],"references":["https://github.com/zulip/zulip/security/advisories/GHSA-87p9-wprh-7rm6","https://github.com/zulip/zulip/security/advisories/GHSA-mrvp-96q6-jpvc","https://github.com/zulip/zulip/commit/0df7bd71f32f3b772e2646c6ab0d60c9b610addf","https://zulip.com/help/configure-who-can-invite-to-streams","https://zulip.com/help/restrict-account-creation#change-who-can-send-invitations"],"weaknesses":["CWE-862"],"ingestedAt":"2026-10-29T20:06:59.846Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/21xxx/CVE-2024-21630.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2024-21630","state":"PUBLISHED","datePublished":"2024-01-25T19:30:09.106Z","dateUpdated":"2025-05-29T15:19:04.180Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2023-12-29T03:00:44.954Z"},"containers":{"cna":{"title":"Zulip non-admins can invite new users to streams they would not otherwise be able to add existing users to","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"zulip","product":"zulip","versions":[{"version":"= 8.0","status":"affected"}]}],"references":[{"url":"https://github.com/zulip/zulip/security/advisories/GHSA-87p9-wprh-7rm6","name":"https://github.com/zulip/zulip/security/advisories/GHSA-87p9-wprh-7rm6","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/zulip/zulip/security/advisories/GHSA-mrvp-96q6-jpvc","name":"https://github.com/zulip/zulip/security/advisories/GHSA-mrvp-96q6-jpvc","tags":["x_refsource_MISC"]},{"url":"https://github.com/zulip/zulip/commit/0df7bd71f32f3b772e2646c6ab0d60c9b610addf","name":"https://github.com/zulip/zulip/commit/0df7bd71f32f3b772e2646c6ab0d60c9b610addf","tags":["x_refsource_MISC"]},{"url":"https://zulip.com/help/configure-who-can-invite-to-streams","name":"https://zulip.com/help/configure-who-can-invite-to-streams","tags":["x_refsource_MISC"]},{"url":"https://zulip.com/help/restrict-account-creation#change-who-can-send-invitations","name":"https://zulip.com/help/restrict-account-creation#change-who-can-send-invitations","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-862","lang":"en","description":"CWE-862: Missing Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2024-01-25T19:30:09.106Z"},"source":{"advisory":"GHSA-87p9-wprh-7rm6","discovery":"UNKNOWN"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://github.com/zulip/zulip/security/advisories/GHSA-87p9-wprh-7rm6","name":"https://github.com/zulip/zulip/security/advisories/GHSA-87p9-wprh-7rm6","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://github.com/zulip/zulip/security/advisories/GHSA-mrvp-96q6-jpvc","name":"https://github.com/zulip/zulip/security/advisories/GHSA-mrvp-96q6-jpvc","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://github.com/zulip/zulip/commit/0df7bd71f32f3b772e2646c6ab0d60c9b610addf","name":"https://github.com/zulip/zulip/commit/0df7bd71f32f3b772e2646c6ab0d60c9b610addf","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://zulip.com/help/configure-who-can-invite-to-streams","name":"https://zulip.com/help/configure-who-can-invite-to-streams","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://zulip.com/help/restrict-account-creation#change-who-can-send-invitations","name":"https://zulip.com/help/restrict-account-creation#change-who-can-send-invitations","tags":["x_refsource_MISC","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-01T22:27:35.955Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-05-08T15:52:52.338039Z","id":"CVE-2024-21630","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-05-29T15:19:04.180Z"}}]}}}