CVE-2026-103765
Critical
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.
SeverityCritical
CVSS9.4
Exploit probability—
ProductMooncake
PublishedOct 2, 2026
First seenOct 2, 2026
Weakness typeCWE-306Missing authentication for critical function
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| kvcache-ai Mooncake | v ≤ 0.3.13.post1 | — |
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