Mooncake Store through 0.3.13.post1 Missing Authorization in Replication Task RPC

Advisories

Mooncake Store through 0.3.13.post1 Missing Authorization in Replication Task RPC

severity: medium
date: 10/6/2026
Affecting: Mooncake <= 0.3.13.post1
CVE: CVE-2026-106039
CWE: CWE-862 Missing Authorization
CVSS: 6.9
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
References: GitHub Issue #4475
https://github.com/kvcache-ai/Mooncake/blob/719735896c86b56fabec6cf3e825fb2ea640597a/mooncake-store/src/master_service.cpp#L12060-L12120
https://github.com/kvcache-ai/Mooncake/blob/719735896c86b56fabec6cf3e825fb2ea640597a/mooncake-store/src/task_manager.cpp#L113-L135
https://github.com/kvcache-ai/Mooncake
Credit: Mingkai Yu, Jiajia Liu
Description: Mooncake Store master through 0.3.13.post1 contains a missing authorization vulnerability that allows unauthenticated attackers to create, steal, and falsely complete replication tasks via the coro_rpc port. Attackers can invoke CreateCopyTask, CreateMoveTask, FetchTasks, and MarkTaskToComplete with victim client UUIDs disclosed by QueryTask to hijack task queues and record replication that never occurred.

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