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MCDonald’s Free Nuggets Hack Leads to Expose of Confidential Data


A series of alarming vulnerabilities in McDonald's digital infrastructure, from free food exploits to exposed executive data.

What started as a simple app glitch developed into a months-long trial, culminating in the researcher, BobDaHacker, cold-calling the company’s headquarters while mentioning security employees he found on LinkedIn. JavaScript files in the Design Hub revealed more: exposed Magicbell API keys and secrets allowed listing users and sending phishing notifications via McDonald’s infrastructure. Further issues included misconfigured Stravito access, exposing internal documents to low-level staff, and exploits in CosMc’s experimental restaurant app, such as unlimited coupon redemptions and arbitrary order data injection.

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