Medium severity · published Oct 6, 2026
CVE-2026-106039
Mooncake Store through 0.3.13.post1 Missing Authorization in Replication Task RPC
6.5
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 26% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MO
Mooncake · kvcache-ai
through 0.3.13.post1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-106039
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-106039
issue-tracking
https://github.com/kvcache-ai/Mooncake/issues/4475
technical-description
https://github.com/kvcache-ai/Mooncake/blob/719735896c86b56fabec6cf3e825fb2ea640597a/mooncake-store/src/master_service.cpp#L12060-L12120
technical-description
https://github.com/kvcache-ai/Mooncake/blob/719735896c86b56fabec6cf3e825fb2ea640597a/mooncake-store/src/task_manager.cpp#L113-L135
product
https://github.com/kvcache-ai/Mooncake
third-party-advisory
https://www.vulncheck.com/advisories/mooncake-store-through-0.3.13-post1-missing-authorization-in-replication-task-rpc
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