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CVE-2026-88255— Erigon Tempo 预广播去重重放漏洞

一分钟漏洞结论

影响对象
ZenHive mpp
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

Improper Validation of Unsafe Equivalence in Input in ZenHive mpp allows an unauthenticated remote client to pass the Tempo duplicate-submission gate twice with one signed transaction. MPP.Methods.Tempo reserves the pre-broadcast dedup slot on the caller-suppl

CVSS 6.3 · Medium
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一、 漏洞 CVE-2026-88255 基础信息

漏洞信息
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Vulnerability Title
mpp Tempo keys its pre-broadcast dedup reserve on the caller-supplied transaction encoding, so a re-encoded signed transaction reserves a second slot
来源: CVE Program / CVE List V5
Vulnerability Description
Improper Validation of Unsafe Equivalence in Input in ZenHive mpp allows an unauthenticated remote client to pass the Tempo duplicate-submission gate twice with one signed transaction. MPP.Methods.Tempo reserves the pre-broadcast dedup slot on the caller-supplied hex in reserve_hash_atomic/2, keyed through store_key/1 on tx.raw rather than on a canonical form of the transaction. The deserializer stores the caller's hex verbatim and accepts both recovery-id encodings, so one signed transaction submitted once with v=27 and once with v=0 yields two distinct reserve keys, and both pass the reserve and reach the broadcast path. The plug-level credential replay store is deliberately carved out for tempo in lib/mpp/replay.ex, leaving this reserve as the only gate, and the post-broadcast mark writes the canonical hash key that the raw-keyed reserve never reads. What the duplicate submission yields depends on the node: a nonce-reuse rejection fails closed, while a node that answers with the canonical hash for an already-known transaction returns a second valid Payment-Receipt for a single on-chain payment. This issue affects mpp: from 0.2.0 before 0.16.2.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
来源: CVE Program / CVE List V5
Vulnerability Type
CWE-1289
来源: CVE Program / CVE List V5

受影响产品

厂商 产品 影响版本 CPE 订阅
ZenHive mpp 0.2.0 ~ 0.16.2 cpe:2.3:a:ZenHive:mpp:*:*:*:*:*:*:*:*
ZenHive mpp f8904666061fbab695874856d8fcd02c471dfe1b ~ e12bd4a1cea2e97c2a01fc059c48e5594a7b4a43 cpe:2.3:a:ZenHive:mpp:*:*:*:*:*:*:*:*

二、漏洞 CVE-2026-88255 的公开POC

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三、漏洞 CVE-2026-88255 的情报信息

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CVE-2026-88255 补丁与修复 (1)

CVE-2026-88255 其他参考 (3)

IV. Related Vulnerabilities

Same product: mpp
Same vendor: ZenHive
Same weakness: CWE-1289

V. Comments for CVE-2026-88255

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