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CVE

CVE-2025-66489

Cal.com Authentication Bypass via bad TOTP + password checks
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CVE

CVE-2025-66489

Cal.com Authentication Bypass via bad TOTP + password checks

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.9
-
4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66489.json, https://github.com/calcom/cal.com/security/advisories/GHSA-9r3w-4j8q-pw98, https://nvd.nist.gov/vuln/detail/CVE-2025-66489

Severity

0

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
0
EPSS Probability
0.00088%
EPSS Percentile
0.2549%
Introduced Version
0
Fix Available
fd6c6e6419dc4b19f8ec8132cd08d57bdfdaee43

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