CVE-2026-56338
6.9
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
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Capgo | Capgo | 0 < 12.128.2 | affected |
| Capgo | Capgo | 12.128.2 | unaffected |
Weaknesses
- CWE-703: Improper Check or Handling of Exceptional Conditions
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: yes
- Technical Impact: partial
Additional References
References
- https://github.com/Cap-go/capgo/security/advisories/GHSA-m53g-7gcj-x6f7
- https://www.vulncheck.com/advisories/capgo-denial-of-service-in-2fa-email-verification-via-auth-v1-otp-endpoint
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