CVE-2026-103765
Mooncake through 0.3.13.post1 Missing Authentication in HTTP Metadata Server
CVSS Score
9.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-306 |
| Vendor | kvcache-ai |
| Product | mooncake |
| Published | Oct 1, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
High
Affected Versions
kvcache-ai / Mooncake
0 ≤ 0.3.13.post1
References
github.com: https://github.com/kvcache-ai/Mooncake/issues/4444 github.com: https://github.com/kvcache-ai/Mooncake/blob/719735896c86b56fabec6cf3e825fb2ea640597a/mooncake-wheel/mooncake/http_metadata_server.py#L61-L106 github.com: https://github.com/kvcache-ai/Mooncake vulncheck.com: https://www.vulncheck.com/advisories/mooncake-through-0.3.13-post1-missing-authentication-in-http-metadata-server
Credits
Mingkai Yu Jiajia Liu