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CVE-2026-16624

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:66fa6858849f66051b5f169170e256f557ab395ecd5ef11a6f9c1784cc28e250
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"description":"CWE-639 Authorization Bypass Through User-Controlled Key","lang":"en"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2acdb11d1c86d5291ad088509442c8ff4c694ba0d7c1fce036b202b172d08a28 · sha256:1180a2cd7f7b629f… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-639","description":"CWE-639 Authorization Bypass Through User-Controlled Key","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2acdb11d1c86d5291ad088509442c8ff4c694ba0d7c1fce036b202b172d08a28 · sha256:1180a2cd7f7b629f… · /containers/adp/0/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"Cal.diy","vendor":"Cal.com","versions":[{"lessThan":"6.2.0","status":"affected","version":"0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2acdb11d1c86d5291ad088509442c8ff4c694ba0d7c1fce036b202b172d08a28 · sha256:1180a2cd7f7b629f… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"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"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2acdb11d1c86d5291ad088509442c8ff4c694ba0d7c1fce036b202b172d08a28 · sha256:1180a2cd7f7b629f… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"description":"CWE-639 Authorization Bypass Through User-Controlled Key","lang":"en"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2acdb11d1c86d5291ad088509442c8ff4c694ba0d7c1fce036b202b172d08a28 · sha256:1180a2cd7f7b629f… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-639","description":"CWE-639 Authorization Bypass Through User-Controlled Key","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2acdb11d1c86d5291ad088509442c8ff4c694ba0d7c1fce036b202b172d08a28 · sha256:1180a2cd7f7b629f… · /containers/adp/0/problemTypes/0/descriptions/0

Source references

3 source assertions
{"url":"https://github.com/calcom/cal.diy/security/advisories/GHSA-4fwh-xxpv-xfm6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2acdb11d1c86d5291ad088509442c8ff4c694ba0d7c1fce036b202b172d08a28 · sha256:1180a2cd7f7b629f… · /containers/cna/references/0
{"url":"https://vokecyber.com/research/calcom-cross-tenant-webhook-plant"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2acdb11d1c86d5291ad088509442c8ff4c694ba0d7c1fce036b202b172d08a28 · sha256:1180a2cd7f7b629f… · /containers/cna/references/1
{"tags":["exploit"],"url":"https://vokecyber.com/research/calcom-cross-tenant-webhook-plant"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2acdb11d1c86d5291ad088509442c8ff4c694ba0d7c1fce036b202b172d08a28 · sha256:1180a2cd7f7b629f… · /containers/adp/0/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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