Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
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-verifi
- https://github.com/Cap-go/capgo/security/advisories/GHSA-m53g-7gcj-x6f7
FAQ
What is CVE-2026-56338?
CVE-2026-56338 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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. Authent...
How severe is CVE-2026-56338?
CVE-2026-56338 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-56338?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.