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CVE-2026-103765— Mooncake through 0.3.13.post1 Missing Authentication in HTTP Metadata Server

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 0.3.13.post1 及更早版本中存在一个未认证的漏洞，该漏洞位于 HTTP 元数据服务器 /metadata 处理器中。攻击者无需认证即可读取、覆盖和删除传输引擎的元数据键。攻击者可以毒化段描述符（例如 tcp_data_port）或重新创建 rpc_meta 条目，将 KV 缓存传输重定向到攻击者控制的监听器，或者耗尽服务器内存。

CVSS 9.4 · Critical EPSS 0.50% · P41

Affected Version Matrix 1

VendorProduct Version RangeStatus
kvcache-ai Mooncake ≤ 0.3.13.post1 affected
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I. Basic Information for CVE-2026-103765

Vulnerability Information
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Vulnerability Title
Mooncake through 0.3.13.post1 Missing Authentication in HTTP Metadata Server
Source: CVE Program / CVE List V5
Vulnerability Description
Mooncake through 0.3.13.post1 contains a missing authentication vulnerability in the HTTP metadata server /metadata handler that allows unauthenticated attackers to read, overwrite, and delete transfer engine metadata keys. Attackers can poison segment descriptors such as tcp_data_port or re-create rpc_meta entries to redirect KV cache transfers to attacker-controlled listeners, or exhaust server memory.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
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-2026-103765

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III. Intelligence Information for CVE-2026-103765

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Patches & Fixes for CVE-2026-103765 (1)

Vendor Advisories for CVE-2026-103765 (1)

Proof of Concept for CVE-2026-103765 (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-2026-103761 7.5 HIGH Mooncake transfer engine through 0.3.13.post1 Memory Exhaustion via Unbounded Notify Queue
CVE-2026-103760 5.9 MEDIUM Mooncake transfer engine through 0.3.13.post1 Denial of Service via P2P Handshake Daemon R

IV. Related Vulnerabilities

Same product: Mooncake
Same vendor: kvcache-ai
Same weakness: CWE-306

V. Comments for CVE-2026-103765

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