cvedb.io
CVE-2025-66489
CRITICAL · CVSS 9.8
EPSS exploitation probability: 0%
Published 2025-12-03T20:16:27.057 · Last modified 2026-06-17T09:56:55.467

Summary

Cal.com is open-source scheduling software. Prior to 5.9.8, A flaw in the login credentials provider allows an attacker to bypass password verification when a TOTP code is provided, potentially gaining unauthorized access to user accounts. This issue exists due to problematic conditional logic in the authentication flow. This vulnerability is fixed in 5.9.8.

Affected products

cal — cal.com

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.