CVE-2026-63627

mppx is a TypeScript interface for machine payments protocol. Prior to 0.8.2, FeePayerPolicy in src/tempo/internal/fee-payer.ts used decodeFunctionData to validate fee-sponsored calldata but did not reject trailing bytes. A client could append nonzero padding that increased intrinsic calldata gas...

CVE-2026-59694

Improper Validation of Specified Quantity in Input in ZenHive mpp allows an unauthenticated remote client to inflate the fee-payer's gas cost per payment by a large multiplier, degrading the sponsor's operating margin. When the mpp Elixir library is configured as fee payer feepayer: true,...

CVE-2025-54427

CVE-2025-54427 (Polkadot Frontier) : The vulnerability affects Polkadot Frontier’s note_min_gas_price_target intrinsic. Before commit a754b3d, the check_inherent function was not implemented, allowing the block producer to set the target gas price without verification. This input drives MinGasPri...