CVE-2026-56338
Capgo - Denial of Service in 2FA Email Verification via /auth/v1/otp Endpoint
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
Capgo before 12.128.2 contains a denial of service vulnerability in the /auth/v1/otp endpoint that prevents email verification for two-factor authentication due to captcha validation failures. Authenticated users cannot complete 2FA enrollment as the backend consistently returns HTTP 500 errors with captcha verification process failed messages, blocking access to security controls.
| CWE | CWE-703 |
| Vendor | capgo |
| Product | capgo |
| Published | Jun 24, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Affected Versions
Capgo / Capgo
0 < 12.128.2
References
Credits
🔍 Judel777