CVE-2025-66489
Critical · 9.8CVSS
9.8
EPSS
0.8%
Published
Dec 3, 2025
CISA due date
—
The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
|---|
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