{"id":"CVE-2021-30487","aliases":["EUVD-2021-17409","GHSA-2c8p-8v35-g4g6"],"status":"published","title":"In the topic moving API in Zulip Server 3.x before 3.4, organization administrators were able to...","description":"In the topic moving API in Zulip Server 3.x before 3.4, organization administrators were able to move messages to streams in other organizations hosted by the same Zulip installation.","severity":{"version":"3.1","score":2.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","level":"low","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00651,"percentile":0.51484,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-732"],"published":"2021-04-14T23:43:01Z","modified":"2026-10-24T10:30:21Z","products":[{"vendor":"zulip","product":"zulip_server"}],"references":[{"url":"https://blog.zulip.com/2021/04/14/zulip-server-3-4/","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-30487"},{"url":"https://github.com/advisories/GHSA-2c8p-8v35-g4g6"}],"sources":{"cve":[{"id":"CVE-2021-30487","description":"In the topic moving API in Zulip Server 3.x before 3.4, organization administrators were able to move messages to streams in other organizations hosted by the same Zulip installation.","status":"published","published":"2021-04-14T23:43:01Z","modified":"2024-08-03T22:32:41.139Z","updated_at":"2026-11-02T14:33:01.852999Z"}],"euvd":[{"id":"EUVD-2021-17409","description":"In the topic moving API in Zulip Server 3.x before 3.4, organization administrators were able to move messages to streams in other organizations hosted by the same Zulip installation.","status":"published","published":"2021-04-14T23:43:01Z","modified":"2024-08-03T22:32:41Z","updated_at":"2026-11-03T03:24:41.906207Z"}],"ghsa":[{"id":"GHSA-2c8p-8v35-g4g6","title":"In the topic moving API in Zulip Server 3.x before 3.4, organization administrators were able to...","description":"In the topic moving API in Zulip Server 3.x before 3.4, organization administrators were able to move messages to streams in other organizations hosted by the same Zulip installation.","status":"published","published":"2022-05-24T17:47:44Z","modified":"2023-01-27T05:02:36Z","cvss":[{"version":"3.1","score":2.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","level":"low"}],"cwes":["CWE-732"],"updated_at":"2026-11-02T14:42:04.742793Z"}],"nvd":[{"id":"CVE-2021-30487","description":"In the topic moving API in Zulip Server 3.x before 3.4, organization administrators were able to move messages to streams in other organizations hosted by the same Zulip installation.","status":"published","published":"2021-04-15T00:15:13.247Z","modified":"2026-06-17T03:50:19.933Z","cvss":[{"version":"3.1","score":2.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","level":"low","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:52.03307Z"}],"osv":[{"id":"CVE-2021-30487","description":"In the topic moving API in Zulip Server 3.x before 3.4, organization administrators were able to move messages to streams in other organizations hosted by the same Zulip installation.","status":"published","published":"2021-04-15T00:15:13.247Z","modified":"2026-10-24T10:30:21.100076957Z","cvss":[{"version":"3.1","score":2.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","level":"low"}],"updated_at":"2026-11-02T15:44:19.483607Z"}]}}