CVE-2026-59695— ZenHive MPP 输入验证错误漏洞

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 (fee_payer: true), MPP.Tempo.Transaction.cosign_fee_payer/3 re-signs the client-supplied base fields of the 0x76 AASigned envelope verbatim, including max_fee_per_gas and max_priority_fee_per_gas, without validating that they are within reasonable bounds. A malicious client embeds arbitrarily large values for these fields in the signed envelope. The server co-signs and broadcasts the transaction. The effective_gas_price billed against the fee-payer wallet is derived from the attacker-supplied ceilings, so the server pays those inflated per-gas rates out of its own wallet. A single crafted request can drain the wallet entirely, after which the server can no longer sponsor gas for legitimate payment requests. This issue affects mpp: from 0.2.0 before 0.6.0.

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

CWE-1284

ZenHive MPP 输入验证错误漏洞

ZenHive MPP是ZenHive组织开源的一个高性能计算服务器。 ZenHive MPP 0.2.0至0.6.0之前版本存在输入验证错误漏洞，该漏洞源于输入中指定数量验证不当，可能导致未经身份验证的远程客户端通过指定任意高gas价格，在单个请求中耗尽费用支付钱包。

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