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CVE-2026-103760— Mooncake transfer engine through 0.3.13.post1 Denial of Service via P2P Handshake Daemon Response Write

Quick assessment

Affected
kvcache-ai Mooncake
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Mooncake传输引擎版本0.3.13.post1之前存在一个拒绝服务漏洞，该漏洞允许未经身份验证的远程攻击者通过不读取响应来阻塞握手守护进程。攻击者可以向握手RPC端口发送Metadata请求，并阻止SocketHandShakePlugin中的单个监听线程在writeFully()函数中停滞，从而破坏所有后续的握手、元数据获取、通知和探测请求。

CVSS 5.9 · Medium EPSS 0.40% · P32

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
kvcache-ai Mooncake ≤ 0.3.13.post1 affected
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I. Basic Information for CVE-2026-103760

Vulnerability Information
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Vulnerability Title
Mooncake transfer engine through 0.3.13.post1 Denial of Service via P2P Handshake Daemon Response Write
Source: CVE Program / CVE List V5
Vulnerability Description
Mooncake transfer engine through 0.3.13.post1 contains a denial of service vulnerability that allows unauthenticated remote attackers to block the handshake daemon by never reading replies. Attackers can send a Metadata request to the handshake RPC port and stall SocketHandShakePlugin's single listener thread in writeFully(), breaking all subsequent handshakes, metadata fetches, notify and probe requests.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
kvcache-ai Mooncake 0 ~ 0.3.13.post1 -

II. Public POCs for CVE-2026-103760

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III. Intelligence Information for CVE-2026-103760

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Vendor Advisories for CVE-2026-103760 (1)

Other References for CVE-2026-103760 (1)

Same Patch Batch · kvcache-ai · 2026-10-01 · 4 CVEs total

CVE-2026-103764 9.8 CRITICAL Mooncake transfer engine before 0.3.13 Unauthenticated Arbitrary Memory Read/Write via TCP
CVE-2026-103765 9.4 CRITICAL Mooncake through 0.3.13.post1 Missing Authentication in HTTP Metadata Server
CVE-2026-103761 7.5 HIGH Mooncake transfer engine through 0.3.13.post1 Memory Exhaustion via Unbounded Notify Queue

IV. Related Vulnerabilities

Same product: Mooncake
Same vendor: kvcache-ai
Same weakness: CWE-400

V. Comments for CVE-2026-103760

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