{"id":"CVE-2026-16624","aliases":["EUVD-2026-47769","GHSA-4fwh-xxpv-xfm6","GHSA-72qw-2qpq-fg7j"],"status":"published","title":"CVE-2026-16624","description":"Cal.com OSS ships lacks authorization on webhook teamId creation, allowing any authenticated user to create a webhook on any team via unvalidated teamId injection, then steal booking data, including fields like organizer/attendee emails and custom responses, and conditionally video-call passwords, by triggering webhook delivery.","severity":{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","level":"critical","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.00355,"percentile":0.29533,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-639"],"published":"2026-07-22T18:31:20Z","modified":"2026-10-28T02:30:56Z","products":[{"vendor":"cal.com","product":"cal.diy"},{"vendor":"calcom","product":"cal.diy"}],"references":[{"url":"https://github.com/calcom/cal.diy/security/advisories/GHSA-4fwh-xxpv-xfm6","tags":["advisory"]},{"url":"https://vokecyber.com/research/calcom-cross-tenant-webhook-plant","tags":["exploit","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16624","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-72qw-2qpq-fg7j"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/16xxx/CVE-2026-16624.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-16624","title":"CVE-2026-16624","description":"Cal.com OSS ships lacks authorization on webhook teamId creation, allowing any authenticated user to create a webhook on any team via unvalidated teamId injection, then steal booking data, including fields like organizer/attendee emails and custom responses, and conditionally video-call passwords, by triggering webhook delivery.","status":"published","published":"2026-07-22T18:31:20.732Z","modified":"2026-07-27T17:10:37.711Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","level":"critical","assessor":"adp"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:20:10.870108Z"}],"euvd":[{"id":"EUVD-2026-47769","description":"Cal.com OSS ships lacks authorization on webhook teamId creation, allowing any authenticated user to create a webhook on any team via unvalidated teamId injection, then steal booking data, including fields like organizer/attendee emails and custom responses, and conditionally video-call passwords, by triggering webhook delivery.","status":"published","published":"2026-07-22T18:31:20Z","modified":"2026-07-27T17:10:37Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-02T18:02:33.886037Z"}],"ghsa":[{"id":"GHSA-72qw-2qpq-fg7j","title":"Cal.com OSS ships lacks authorization on webhook teamId creation, allowing any authenticated user...","description":"Cal.com OSS ships lacks authorization on webhook teamId creation, allowing any authenticated user to create a webhook on any team via unvalidated teamId injection, then steal booking data, including fields like organizer/attendee emails and custom responses, and conditionally video-call passwords, by triggering webhook delivery.","status":"published","published":"2026-07-22T21:32:04Z","modified":"2026-07-27T18:31:42Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","level":"critical"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T15:09:51.407039Z"}],"nvd":[{"id":"CVE-2026-16624","description":"Cal.com OSS ships lacks authorization on webhook teamId creation, allowing any authenticated user to create a webhook on any team via unvalidated teamId injection, then steal booking data, including fields like organizer/attendee emails and custom responses, and conditionally video-call passwords, by triggering webhook delivery.","status":"published","published":"2026-07-22T19:16:58.273Z","modified":"2026-10-24T13:10:00.147Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","level":"critical","assessor":"secondary"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:12:32.089897Z"}],"osv":[{"id":"CVE-2026-16624","title":"CVE-2026-16624","description":"Cal.com OSS ships lacks authorization on webhook teamId creation, allowing any authenticated user to create a webhook on any team via unvalidated teamId injection, then steal booking data, including fields like organizer/attendee emails and custom responses, and conditionally video-call passwords, by triggering webhook delivery.","status":"published","published":"2026-07-22T18:31:20.732Z","modified":"2026-10-28T02:30:56.910731178Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-02T15:44:57.682091Z"}]}}