CVE-2026-103765
Mooncake through 0.3.13.post1 Missing Authentication in HTTP Metadata Server
- State
- Published
- Severity
- 8.8 High
- Published
- Oct 1, 2026
- Updated
- Oct 2, 2026
- Reserved
- Oct 1, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.8 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 9.4 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H | VulnCheck |
Weaknesses
- CWE-306 Missing Authentication for Critical Function
Affected Products
| Product | Versions |
|---|---|
Mooncakekvcache-ai |
|
References
- GitHub Issue #4444issue-tracking
- https://github.com/kvcache-ai/Mooncake/blob/719735896c86b56fabec6cf3e825fb2ea640597a/mooncake-wheel/mooncake/http_metadata_server.py#L61-L106technical-description
- https://github.com/kvcache-ai/Mooncakeproduct
- VulnCheck Advisory: Mooncake through 0.3.13.post1 Missing Authentication in HTTP Metadata Serverthird-party-advisory
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