Security Flaw in Kari Kadai App Exposes User Auth Tokens Before OTP Verification

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Security researcher Mughunthen from Neyveli discovered a critical authentication vulnerability in The Kari Kadai, a local food delivery app. The app's login API was returning sensitive authentication tokens in its initial response, before users completed OTP verification. This flaw allowed anyone with a target user's phone number to intercept the token and bypass two-factor authentication entirely. The vulnerability potentially exposed personal data including user profiles, order history, and saved addresses. Mughunthen has reported the issue to India's cybersecurity agency CERT-IN, and a fix is currently pending.

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