EUVD-2026-84806

mppx is a TypeScript interface for machine payments protocol. Prior to 0.8.2, the fee-payer cosigning path in src/tempo/internal/fee-payer.ts copied a client-supplied accesslist from a 0x78 FeePayerEnvelope without validating its length or contents. Because EIP-2930 access-list entries consume...

CVE-2026-63628 mppx: Gas Draining with access list

mppx is a TypeScript interface for machine payments protocol. Prior to 0.8.2, the fee-payer cosigning path in src/tempo/internal/fee-payer.ts copied a client-supplied accesslist from a 0x78 FeePayerEnvelope without validating its length or contents. Because EIP-2930 access-list entries consume...

CVE-2026-63628: Improper Input Validation

mppx is a TypeScript interface for machine payments protocol. Prior to 0.8.2, the fee-payer cosigning path in src/tempo/internal/fee-payer.ts copied a client-supplied accesslist from a 0x78 FeePayerEnvelope without validating its length or contents. Because EIP-2930 access-list entries consume...