CVE-2026-59252

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Source
https://cve.org/CVERecord?id=CVE-2026-59252
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-59252.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-59252
Aliases
Published
2026-07-17T10:11:54.436Z
Modified
2026-07-19T03:46:50.520265103Z
Severity
  • 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Missing gas_limit validation in mpp Tempo fee-payer enables wallet drain
Details

Improper Validation of Specified Quantity in Input in ZenHive mpp allows an unauthenticated remote client to drain the fee-payer wallet, resulting in denial of service for legitimate clients.

When the mpp Elixir library is configured as fee payer (feepayer: true), the MPP.Methods.Tempo payment method co-signs and broadcasts a client-supplied EVM transaction without first validating that the client-supplied gaslimit is sufficient to complete the intended call. A malicious client can submit a signed transferWithMemo transaction with gaslimit deliberately set just below the amount required for successful execution. The server co-signs the transaction and broadcasts it via rpcbroadcast_sync. The transaction runs out of gas during EVM execution and reverts, but the fee-payer wallet is still charged for the burned gas while the client pays nothing and receives no resource. Repeated requests from one or more malicious clients drain the fee-payer wallet at near-zero cost to the attacker, ultimately preventing the server from sponsoring gas for legitimate payment requests.

The waitforconfirmation = false (optimistic) path is also affected: it invokes simulatepaymentcall via eth_call, but that simulation omits the gas parameter and therefore does not catch out-of-gas conditions.

This issue affects mpp: from 0.2.0 before 0.6.0.

Database specific 
{
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "d29d54e507918db00a5b65d90136b73166c017d7"
                },
                {
                    "fixed": "d84e3e528db39654540c2035ea0fbdf7b950d3d1"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ],
    "cwe_ids": [
        "CWE-1284"
    ],
    "cna_assigner": "EEF",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59252.json"
}
References

Affected packages

Git / github.com/zenhive/mpp

Affected ranges

Type
GIT
Repo
https://github.com/zenhive/mpp
Events
Introduced
7ca7538f05959a98e0e5e63e4bd949b4f362cf8d
Fixed
422bcdd066d1457a93bf5e75fd55e71c5e0be961
Fixed
d84e3e528db39654540c2035ea0fbdf7b950d3d1
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0.2.0"
        },
        {
            "fixed": "0.6.0"
        }
    ],
    "source": [
        "DESCRIPTION",
        "REFERENCES"
    ]
}

Affected versions

v0.*
v0.2.0
v0.3.0
v0.4.0
v0.5.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-59252.json"