CVE-2025-66489
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.
Scoring
- Severity
- CRITICAL
- CVSS base score
- 9.9
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:N
- EPSS probability
- 0.84%
- CWE
- CWE-303
- Published
- 2025-12-03
- Last modified
- 2026-03-13
Affected products
- calcom cal.com
Weakness type
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