{"id":"CVE-2017-0896","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-0896","generatedAt":"2026-10-28T19:51:10.750Z","title":"Zulip Server 1.5.1 and below suffer from an error in the implementation of the invite_by_admins_only setting in the Zulip group chat application server that allowed an authenticated user to invite other users to join a Zulip organization even if the…","description":"Zulip Server 1.5.1 and below suffer from an error in the implementation of the invite_by_admins_only setting in the Zulip group chat application server that allowed an authenticated user to invite other users to join a Zulip organization even if the organization was configured to prevent this.","published":"2017-06-02T17:29:00.000Z","lastModified":"2026-06-17T00:58:29.000Z","status":"Modified","sourceIdentifier":"support@hackerone.com","cvss":{"version":"3.0","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"},"cwe":["CWE-285","CWE-862"],"affected":["zulip/zulip server"],"epss":{"score":0.01278,"percentile":0.69834,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (1.28%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/zulip/zulip/commit/1f48fa27672170bba3b9a97384905bb04c18761b","tags":["Issue Tracking","Patch"],"source":"support@hackerone.com"},{"url":"https://groups.google.com/forum/#%21msg/zulip-announce/sUYeJv-fFmg/2TU2TLmNAwAJ","source":"support@hackerone.com"},{"url":"https://hackerone.com/reports/224210","tags":["Permissions Required"],"source":"support@hackerone.com"},{"url":"https://github.com/zulip/zulip/commit/1f48fa27672170bba3b9a97384905bb04c18761b","tags":["Issue Tracking","Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://groups.google.com/forum/#%21msg/zulip-announce/sUYeJv-fFmg/2TU2TLmNAwAJ","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://hackerone.com/reports/224210","tags":["Permissions Required"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-0896","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}