CVE-2026-59252Network attack vector

Fee-payer wallet drain via low-gas transactions

Published Jul 17, 2026 · Updated Jul 17, 2026

Improper gas-limit validation in ZenHive MPP 0.2.0 and later before 0.6.0 allows remote attackers to drain fee-payer wallets. MPP.Methods.Tempo.broadcast_and_verify/7 co-signs and broadcasts client transactions without ensuring gas_limit permits execution, while optimistic simulation omits that parameter. Tempo fee_payer configuration is required; repeated reverting transactions consume sponsor funds until legitimate payment sponsorship stops.

CVSS severity8.2
High
EPSS probability0.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper gas-limit validation in ZenHive MPP 0.2.0 and later before 0.6.0 allows remote attackers to drain fee-payer wallets. MPP.Methods.Tempo.broadcast_and_verify/7 co-signs and broadcasts client transactions without ensuring gas_limit permits execution, while optimistic simulation omits that parameter. Tempo fee_payer configuration is required; repeated reverting transactions consume sponsor funds until legitimate payment sponsorship stops.

The record

CVE
CVE-2026-59252
Published
Jul 17, 2026
Updated
Jul 17, 2026
Vendor
ZenHive
Product
MPP
Classifications
CWE-1284, T1499.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.2.0 <0.6.0
  2. Affected versionversion=d29d54e507918db00a5b65d90136b73166c017d7 <d84e3e528db39654540c2035ea0fbdf7b950d3d1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ZenHive · MPPversion=0.2.0 <0.6.0; version=d29d54e507918db00a5b65d90136b73166c017d7 <d84e3e528db39654540c2035ea0fbdf7b950d3d1

Published CVSS scores

8.2Erlang Ecosystem FoundationCVSS: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 describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1284Improper Validation of Specified Quantity in Input
T1499.003Application Exhaustion Flood

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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