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CVE-2026-73541— Tempo fee sponsorship in mpp bounds each transaction but not aggregate exposure, allowing concurrent sponsor-wallet drain

Quick assessment

Affected
ZenHive mpp
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ZenHive MPP是ZenHive组织开源的一款嵌入式服务器。 ZenHive MPP 0.2.0版本至0.12.0之前版本存在资源管理错误漏洞，该漏洞源于资源分配未设置限制或节流，FeePayerPolicy仅针对单笔交易执行费用上限，未考虑并发请求的累积暴露，可能导致未经身份验证的远程攻击者通过并发赞助支付耗尽费用支付者钱包，从而拒绝为合法支付者提供服务。

CVSS 8.3 · High EPSS 0.42% · P35

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 2

VendorProduct Version RangeStatus
ZenHive mpp 0.2.0< 0.12.0 affected
d29d54e507918db00a5b65d90136b73166c017d7< ddc46868fba57ccebb567c04709812b466123076 affected
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I. Basic Information for CVE-2026-73541

Vulnerability Information
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Vulnerability Title
Tempo fee sponsorship in mpp bounds each transaction but not aggregate exposure, allowing concurrent sponsor-wallet drain
Source: CVE Program / CVE List V5
Vulnerability Description
Allocation of Resources Without Limits or Throttling in ZenHive mpp allows an unauthenticated remote client to drain the fee-payer wallet through concurrent sponsored payments, denying service to legitimate payers once it is empty. MPP.Methods.Tempo.FeePayerPolicy enforces its ceilings (max_gas, max_fee_per_gas, max_priority_fee_per_gas, the worst-case gas_limit * max_fee_per_gas <= max_total_fee budget cap, and a validity window) against one transaction at a time, and nothing accounts for exposure across concurrent requests. reserve_hash_atomic/2 is keyed on the transaction hash, so it prevents duplicate broadcast of the same signed transaction but not N distinct sponsored transactions carrying distinct expiring nonces. Committed sponsor exposure is therefore N times max_total_fee, bounded by nothing in the library, and the default 900 second validity window lets co-signed transactions stay broadcastable and uncounted for that entire period. This issue affects mpp: from 0.2.0 before 0.12.0.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
ZenHive MPP 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ZenHive MPP是ZenHive组织开源的一款嵌入式服务器。 ZenHive MPP 0.2.0版本至0.12.0之前版本存在资源管理错误漏洞，该漏洞源于资源分配未设置限制或节流，FeePayerPolicy仅针对单笔交易执行费用上限，未考虑并发请求的累积暴露，可能导致未经身份验证的远程攻击者通过并发赞助支付耗尽费用支付者钱包，从而拒绝为合法支付者提供服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ZenHive mpp 0.2.0 ~ 0.12.0 cpe:2.3:a:ZenHive:mpp:*:*:*:*:*:*:*:*
ZenHive mpp d29d54e507918db00a5b65d90136b73166c017d7 ~ ddc46868fba57ccebb567c04709812b466123076 cpe:2.3:a:ZenHive:mpp:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-73541

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 9153 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
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100+ AI POC generations per month

III. Intelligence Information for CVE-2026-73541

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Vendor Advisories for CVE-2026-73541 (2)

Other References for CVE-2026-73541 (1)

Same Patch Batch · ZenHive · 2026-08-19 · 4 CVEs total

CVE-2026-67581 8.7 HIGH On-chain transfer proof is not single-use in mpp EVM payment method, enabling cross-challe
CVE-2026-73136 8.2 HIGH Static memo configuration in mpp Tempo disables per-challenge attribution binding, enablin
CVE-2026-73829 6.3 MEDIUM Non-atomic hash-credential dedup in mpp Tempo allows replay of a confirmed payment under a

IV. Related Vulnerabilities

Same product: mpp
Same vendor: ZenHive
Same weakness: CWE-770

V. Comments for CVE-2026-73541

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