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CVE-2026-73136— Static memo configuration in mpp Tempo disables per-challenge attribution binding, enabling third-party replay

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 0.6.1版本至0.6.4之前版本存在授权问题漏洞，该漏洞源于身份验证绕过（捕获重放）问题，静态memo配置导致绑定检查被跳过，未经验证的第三方可通过重放已结算的转账获取付费资源。

CVSS 8.2 · High EPSS 0.54% · P43

Affected Version Matrix 2

VendorProduct Version RangeStatus
ZenHive mpp 0.6.1< 0.6.4 affected
542a525563c2fcedd670b593437deca81c6797a4< 2207d7f456ae14c1d3fcacc6f635bf4f8cee1a34 affected
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I. Basic Information for CVE-2026-73136

Vulnerability Information
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Vulnerability Title
Static memo configuration in mpp Tempo disables per-challenge attribution binding, enabling third-party replay
Source: CVE Program / CVE List V5
Vulnerability Description
Authentication Bypass by Capture-replay in ZenHive mpp allows an unauthenticated third party to obtain paid resources by replaying a transfer settled by an unrelated payer. MPP.Methods.Tempo normally binds a settled TIP-20 TransferWithMemo to the specific challenge under verification through an attribution nonce carried in the memo. When a static "memo" is configured in method_config, check_matched_memo_binding/3 returns the match unconditionally and that binding is skipped, leaving only token, recipient, amount and the static memo value to match on. The static memo is echoed in every unauthenticated 402 response and Tempo transfers are public, so an attacker can take any matching transfer paid by a legitimate customer, request a fresh challenge for the same route, and present that transaction hash as a type="hash" credential. The hash path performs no sender or signature check tying the presenter to the wallet that broadcast the transfer. This issue affects mpp: from 0.6.1 before 0.6.4.
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:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用捕获-重放进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
ZenHive MPP 授权问题漏洞
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 0.6.1版本至0.6.4之前版本存在授权问题漏洞，该漏洞源于身份验证绕过（捕获重放）问题，静态memo配置导致绑定检查被跳过，未经验证的第三方可通过重放已结算的转账获取付费资源。
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 0.6.1 ~ 0.6.4 cpe:2.3:a:ZenHive:mpp:*:*:*:*:*:*:*:*
ZenHive mpp 542a525563c2fcedd670b593437deca81c6797a4 ~ 2207d7f456ae14c1d3fcacc6f635bf4f8cee1a34 cpe:2.3:a:ZenHive:mpp:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-73136

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 7649 chars
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III. Intelligence Information for CVE-2026-73136

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Patches & Fixes for CVE-2026-73136 (1)

Vendor Advisories for CVE-2026-73136 (3)

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-2026-73541 8.3 HIGH Tempo fee sponsorship in mpp bounds each transaction but not aggregate exposure, allowing
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-294

V. Comments for CVE-2026-73136

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