CVE-2026-106040: Mooncake Store through 0.3.13.post1 Missing Authorization via EvictDiskReplica RPC

Severity: high (CVSS 8.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-06 · updated 2026-10-06
Weakness: CWE-862

Description

Mooncake Store master through 0.3.13.post1 contains a missing authorization vulnerability that allows unauthenticated attackers to erase any object's disk replica via EvictDiskReplica and BatchEvictDiskReplica. Attackers reaching the coro_rpc master port can evict DISK replicas across all tenants, deleting objects whose only remaining replica is on disk.

Affected products

kvcache-ai Mooncake: through 0.3.13.post1

References

https://github.com/kvcache-ai/Mooncake
https://github.com/kvcache-ai/Mooncake/blob/719735896c86b56fabec6cf3e825fb2ea640597a/mooncake-store/src/master_service.cpp#L5507-L5515
https://github.com/kvcache-ai/Mooncake/issues/4478
https://www.vulncheck.com/advisories/mooncake-store-through-0.3.13-post1-missing-authorization-via-evictdiskreplica-rpc

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