CVE-2026-56338
Capgo - Denial of Service in 2FA Email Verification via /auth/v1/otp Endpoint
- State
- Published
- Severity
- 6.9 Medium
- Published
- Jun 24, 2026
- Updated
- Jun 24, 2026
- Reserved
- Jun 20, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | VulnCheck |
Weaknesses
- CWE-703 Improper Check or Handling of Exceptional Conditions
Affected Products
| Product | Versions |
|---|---|
CapgoCapgo |
|
References
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