CVE-2026-56338
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.
Summary dbcve.org
Capgo before version 12.128.2 contains a denial of service vulnerability in the /auth/v1/otp endpoint. The captcha validation logic fails consistently, causing the backend to return HTTP 500 errors with 'captcha verification process failed' messages. This prevents authenticated users from completing 2FA enrollment, blocking access to a critical security control.
Mitigation
Upgrade Capgo to version 12.128.2 or later to resolve the captcha validation failure. If immediate upgrade is not possible, temporarily disable captcha requirements for the otp endpoint as a compensating control while planning the upgrade.