{"schema_version":1,"title":"Zulip Server vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 5 vulnerabilities in Zulip Server: 0 in the last 7 days and 3 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-97701, was published on 4 November 2026. 3 vulnerabilities in the last four weeks, up from none in the four before.","url":"https://junglewise.ai/threats/technologies/zulip-server","json_url":"https://junglewise.ai/threats/technologies/zulip-server.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/zulip-server","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","thin":false,"counts":{"high":0,"all_time":5,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":3,"last_90_days":3,"last_365_days":5},"latest":[{"cve":"CVE-2026-97701","cvss":6.5,"slug":"cve-2026-97701-zulip-is-an-open-source-team-collaboration-tool-in-zulip-server","title":"Zulip Server missing content length limit in render endpoint","severity":"medium","exploited":false,"published_at":"2026-11-04T19:17:41.793+00:00","url":"https://junglewise.ai/threats/cve-2026-97701-zulip-is-an-open-source-team-collaboration-tool-in-zulip-server"},{"cve":"CVE-2026-102893","epss":0.0039,"slug":"cve-2026-102893-zulip-is-an-open-source-team-collaboration-tool-in-zulip-server","title":"Zulip Server OpenID Connect email verification bypass","severity":"info","exploited":false,"published_at":"2026-10-14T16:17:29.987+00:00","url":"https://junglewise.ai/threats/cve-2026-102893-zulip-is-an-open-source-team-collaboration-tool-in-zulip-server"},{"cve":"CVE-2026-100404","cvss":6.5,"epss":0.0042,"slug":"cve-2026-100404-zulip-is-an-open-source-team-collaboration-tool-in-zulip-server","title":"Zulip Server information disclosure in event queue","severity":"medium","exploited":false,"published_at":"2026-10-14T16:17:28.86+00:00","url":"https://junglewise.ai/threats/cve-2026-100404-zulip-is-an-open-source-team-collaboration-tool-in-zulip-server"},{"cve":"CVE-2026-40300","cvss":6.5,"slug":"cve-2026-40300-zulip-server-improper-access-control-in-message-history-api","title":"Zulip Server improper access control in message history API","severity":"medium","exploited":false,"published_at":"2026-05-12T17:16:20.15+00:00","url":"https://junglewise.ai/threats/cve-2026-40300-zulip-server-improper-access-control-in-message-history-api"},{"cve":"CVE-2026-26058","cvss":6.1,"epss":0.0024,"slug":"cve-2026-26058-zulip-server-path-traversal-in-data-import-utility","title":"Zulip Server path traversal in data import utility","severity":"medium","exploited":false,"published_at":"2026-04-03T21:17:10.23+00:00","url":"https://junglewise.ai/threats/cve-2026-26058-zulip-server-path-traversal-in-data-import-utility"}],"weekly":[{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-28","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-05","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-12","critical":0,"exploited":0,"vulnerabilities":2},{"week":"2026-10-19","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-26","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-11-02","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-11-09","critical":0,"exploited":0,"vulnerabilities":0}],"related":[{"name":"Zulip","slug":"zulip","vulnerabilities":4,"url":"https://junglewise.ai/threats/technologies/zulip"}],"technology":{"hub":true,"name":"Zulip Server","slug":"zulip-server","vendor":{"hub":true,"name":"Zulip","slug":"zulip","url":"https://junglewise.ai/threats/vendors/zulip"},"aliases":[],"category":"web","homepage":"https://zulip.com/","repo_url":"https://github.com/zulip/zulip","description":"An open-source chat and collaborative software platform.","url":"https://junglewise.ai/threats/technologies/zulip-server"},"most_severe":[{"cve":"CVE-2026-100404","cvss":6.5,"epss":0.0042,"slug":"cve-2026-100404-zulip-is-an-open-source-team-collaboration-tool-in-zulip-server","title":"Zulip Server information disclosure in event queue","severity":"medium","exploited":false,"published_at":"2026-10-14T16:17:28.86+00:00","url":"https://junglewise.ai/threats/cve-2026-100404-zulip-is-an-open-source-team-collaboration-tool-in-zulip-server"},{"cve":"CVE-2026-97701","cvss":6.5,"slug":"cve-2026-97701-zulip-is-an-open-source-team-collaboration-tool-in-zulip-server","title":"Zulip Server missing content length limit in render endpoint","severity":"medium","exploited":false,"published_at":"2026-11-04T19:17:41.793+00:00","url":"https://junglewise.ai/threats/cve-2026-97701-zulip-is-an-open-source-team-collaboration-tool-in-zulip-server"},{"cve":"CVE-2026-40300","cvss":6.5,"slug":"cve-2026-40300-zulip-server-improper-access-control-in-message-history-api","title":"Zulip Server improper access control in message history API","severity":"medium","exploited":false,"published_at":"2026-05-12T17:16:20.15+00:00","url":"https://junglewise.ai/threats/cve-2026-40300-zulip-server-improper-access-control-in-message-history-api"},{"cve":"CVE-2026-26058","cvss":6.1,"epss":0.0024,"slug":"cve-2026-26058-zulip-server-path-traversal-in-data-import-utility","title":"Zulip Server path traversal in data import utility","severity":"medium","exploited":false,"published_at":"2026-04-03T21:17:10.23+00:00","url":"https://junglewise.ai/threats/cve-2026-26058-zulip-server-path-traversal-in-data-import-utility"},{"cve":"CVE-2026-102893","epss":0.0039,"slug":"cve-2026-102893-zulip-is-an-open-source-team-collaboration-tool-in-zulip-server","title":"Zulip Server OpenID Connect email verification bypass","severity":"info","exploited":false,"published_at":"2026-10-14T16:17:29.987+00:00","url":"https://junglewise.ai/threats/cve-2026-102893-zulip-is-an-open-source-team-collaboration-tool-in-zulip-server"}],"generated_at":"2026-11-12T03:07:00.164048+00:00"}