CVE-2026-16624

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{"affected": [{"affectedData": [{"product": "Cal.diy", "vendor": "Cal.com", "versions": [{"lessThan": "6.2.0", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "cret@cert.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Cal.com OSS carece de autorizaci\u00f3n en la creaci\u00f3n de teamId de webhook, permitiendo a cualquier usuario autenticado crear un webhook en cualquier equipo mediante la inyecci\u00f3n de un teamId no validado, para luego robar datos de reserva, incluyendo campos como correos electr\u00f3nicos de organizador/asistente y respuestas personalizadas, y, condicionalmente, contrase\u00f1as de videollamadas, al activar la entrega del webhook."}], "id": "CVE-2026-16624", "lastModified": "2026-10-24T13:10:00.147", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.6, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 5.8, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-16624", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-07-27T17:09:33.166013Z", "version": "2.0.3"}}]}, "published": "2026-07-22T19:16:58.273", "references": [{"source": "cret@cert.org", "url": "https://github.com/calcom/cal.diy/security/advisories/GHSA-4fwh-xxpv-xfm6"}, {"source": "cret@cert.org", "url": "https://vokecyber.com/research/calcom-cross-tenant-webhook-plant"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://vokecyber.com/research/calcom-cross-tenant-webhook-plant"}], "sourceIdentifier": "cret@cert.org", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-639"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,6.2.0)"}}], "enrichment": {"confidence": 97.0, "confidence_source": "matching", "scores": [{"score": 97.0, "source": "matching"}]}, "original": {"product": "Cal.diy", "source": "cna", "vendor": "Cal.com"}, "product": "cal.diy", "vendor": "calcom"}], "created": "2026-07-23T18:30:13.453459+00:00", "title": "Cal.com Webhook TeamID Injection Permits Unauthorized Data Theft", "updated": "2026-08-02T17:45:02.780212+00:00", "vendors": ["calcom", "calcom$PRODUCT$cal.diy"]}