CVE-2026-16624

{"id": "CVE-2026-16624", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-16624", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-07-27T17:09:33.166013Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 9.6, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.8, "exploitabilityScore": 3.1}]}, "affected": [{"source": "cret@cert.org", "affectedData": [{"vendor": "Cal.com", "product": "Cal.diy", "versions": [{"status": "affected", "version": "0", "lessThan": "6.2.0", "versionType": "custom"}]}]}], "published": "2026-07-22T19:16:58.273", "references": [{"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": "cret@cert.org"}, {"url": "https://vokecyber.com/research/calcom-cross-tenant-webhook-plant", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-639"}]}], "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."}], "lastModified": "2026-07-27T18:16:52.807", "sourceIdentifier": "cret@cert.org"}