CVE-2026-59694 Unbounded access list in mpp Tempo fee-payer inflates gas cost per payment

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-2026-59694

CVE-2026-59694 affects ZenHive mpp (Elixir library) when configured as the fee payer. The issue occurs in MPP.Tempo.Transaction.cosign_fee_payer/3, which re-signs client-supplied base fields of the 0x76 AASigned envelope verbatim, including the EIP-2930 access list, without validating length or c...

EEF-CVE-2026-59694 Unbounded access list in mpp Tempo fee-payer inflates gas cost per payment

Summary 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 fee\payer: true...

CVE-2026-59694 Unbounded access list in mpp Tempo fee-payer inflates gas cost per payment

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-2026-59694 Unbounded access list in mpp Tempo fee-payer inflates gas cost per payment

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,...

EUVD-2026-45158

Improper Validation of Specified Quantity in Input in ZenHive mpp allows an unauthenticated remote client to drain the fee-payer wallet in a single request by naming an arbitrarily high gas price. When the mpp Elixir library is configured as fee payer feepayer: true,...

CVE-2026-59695 Unbounded max_fee_per_gas in mpp Tempo fee-payer enables single-request wallet drain

Improper Validation of Specified Quantity in Input in ZenHive mpp allows an unauthenticated remote client to drain the fee-payer wallet in a single request by naming an arbitrarily high gas price. When the mpp Elixir library is configured as fee payer feepayer: true,...

EEF-CVE-2026-59695 Unbounded max_fee_per_gas in mpp Tempo fee-payer enables single-request wallet drain

Summary Improper Validation of Specified Quantity in Input in ZenHive mpp allows an unauthenticated remote client to drain the fee-payer wallet in a single request by naming an arbitrarily high gas price. When the mpp Elixir library is configured as fee payer fee\payer: true,...

CVE-2026-59695

Vulnerability summary (CVE-2026-59695). The ZenHive mpp Elixir library, when configured as a fee payer (fee_payer: true), is vulnerable to an unauthenticated remote client that can drain the fee-payer wallet in a single request. The root cause is improper validation in MPP.Tempo.Transaction.cosig...

CVE-2026-59695 Unbounded max_fee_per_gas in mpp Tempo fee-payer enables single-request wallet drain

Improper Validation of Specified Quantity in Input in ZenHive mpp allows an unauthenticated remote client to drain the fee-payer wallet in a single request by naming an arbitrarily high gas price. When the mpp Elixir library is configured as fee payer feepayer: true,...

CVE-2026-59695

Improper Validation of Specified Quantity in Input in ZenHive mpp allows an unauthenticated remote client to drain the fee-payer wallet in a single request by naming an arbitrarily high gas price. When the mpp Elixir library is configured as fee payer feepayer: true,...

CVE-2026-59695 Unbounded max_fee_per_gas in mpp Tempo fee-payer enables single-request wallet drain

Improper Validation of Specified Quantity in Input in ZenHive mpp allows an unauthenticated remote client to drain the fee-payer wallet in a single request by naming an arbitrarily high gas price. When the mpp Elixir library is configured as fee payer feepayer: true,...

mpp has multiple payment bypass and griefing vulnerabilities

Impact Multiple vulnerabilities were discovered which allowed for undesirable behaviors, including: - Performing free tempo/charge requests - Replaying existing tempo/charge requests - Performing free tempo/session requests - Piggybacking off existing tempo/session channels - Griefing existing...

GHSA-FXC9-7J2W-VX54 mpp has multiple payment bypass and griefing vulnerabilities

Impact Multiple vulnerabilities were discovered which allowed for undesirable behaviors, including: - Performing free tempo/charge requests - Replaying existing tempo/charge requests - Performing free tempo/session requests - Piggybacking off existing tempo/session channels - Griefing existing...

kora-lib: Unrecognized Instruction Types Create Empty Stubs That Bypass Fee Payer Policy

Summary When inner CPI instructions use instruction types not recognized by Kora's parser including Token-2022 extension instructions like ConfidentialTransfer, TransferFeeExtension::WithdrawWithheldTokens, etc., they are reconstructed as stub instructions with empty accounts and empty data. Thes...

GHSA-X442-M7CC-HR92 kora-lib: Unrecognized Instruction Types Create Empty Stubs That Bypass Fee Payer Policy

Summary When inner CPI instructions use instruction types not recognized by Kora's parser including Token-2022 extension instructions like ConfidentialTransfer, TransferFeeExtension::WithdrawWithheldTokens, etc., they are reconstructed as stub instructions with empty accounts and empty data. Thes...