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Bypassing CSP with policy injection

portswigger.net | research | #bug-bounty | #portswigger | #chrome | #csp-bypass | #paypal | #edge | #policy-injection
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Summary

Gareth Heyes injects directives into PayPal's CSP via a token parameter in report-uri, dropping Edge's whole policy with a stray semicolon and overriding Chrome's script-src for a $900 bounty.
Published
Collected

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