Description
mppx is a TypeScript interface for machine payments protocol. Prior to version 0.4.11, the stripe/charge payment method did not check Stripe's Idempotent-Replayed response header when creating PaymentIntents. An attacker could replay a valid credential containing the same spt token against a new challenge, and the server would accept the replayed Stripe PaymentIntent as a new successful payment without actually charging the customer again. This allowed an attacker to pay once and consume unlimited resources by replaying the credential. This issue has been patched in version 0.4.11.
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Product status
References
github.com/wevm/mppx/security/advisories/GHSA-8mhj-rffc-rcvw
github.com/...ommit/b2b1a0b60506fc71aa80b8a025084949dca1a994
github.com/wevm/mppx/releases/tag/mppx@0.4.11