CVE-2026-106039 Mooncake Store through 0.3.13.post1 Missing Authorization in Replication Task RPC
Unauthenticated attackers can hijack replication tasks and falsify completion records in Mooncake Store via RPC endpoints.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-106039?
CVE-2026-106039 is a medium-severity missing authorization vulnerability in kvcache-ai Mooncake, published on 6 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-862
Which versions are affected by CVE-2026-106039?
How do I fix CVE-2026-106039?
No fix has been published for CVE-2026-106039 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-106039 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-106039 exists.
Sources
Also known as GHSA-vf47-333j-q4ww.