# CVE-2026-106041: Mooncake Store missing authorization in NotifyOffloadSuccess RPC

Source: https://junglewise.ai/threats/cve-2026-106041-mooncake-store-master-through-0-3-13-post1-contains-a-missing  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-06. Updated: 2026-10-06  
License: CC BY 4.0 with a link back

CVE-2026-106041 · Severity: medium · CVSS 6.5 · Published 2026-10-06

Mooncake Store is a serving platform for large language model caching and storage. An unauthenticated attacker can exploit a missing authorization check in the NotifyOffloadSuccess RPC to inject malicious disk replicas, allowing them to serve poisoned data or fake key existence to legitimate clients without credentials.

Technologies: [Kvcache-Ai Mooncake Store](https://junglewise.ai/threats/technologies/mooncake-store). Vendors: [Kvcache-Ai](https://junglewise.ai/threats/vendors/kvcache-ai).

## Quick answers

**Is CVE-2026-106041 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-106041 being exploited in the wild.

**How severe is CVE-2026-106041?** Medium severity, with a CVSS score of 6.5, published 6 October 2026.

**Which products and versions are affected?** Kvcache-Ai Mooncake Store master through 0.3.13.post1.

**Is there a fix for CVE-2026-106041?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-106041 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-106041?** Check whether you run Kvcache-Ai Mooncake Store at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The NotifyOffloadSuccess RPC in Mooncake Store master through 0.3.13.post1 fails to validate the caller's authorization before accepting LOCAL_DISK replica registrations. An attacker can mount a local disk segment with an arbitrary client UUID and attach replicas pointing to attacker-controlled endpoints, enabling cache poisoning and data integrity attacks. No authentication or network trust is required.

## Affected products

- kvcache-ai Mooncake Store master through 0.3.13.post1

## Timeline

- 2026-10-06: disclosed

## References

- [https://github.com/kvcache-ai/Mooncake](https://github.com/kvcache-ai/Mooncake)
- [https://github.com/kvcache-ai/Mooncake/blob/719735896c86b56fabec6cf3e825fb2ea640597a/mooncake-store/src/master_service.cpp](https://github.com/kvcache-ai/Mooncake/blob/719735896c86b56fabec6cf3e825fb2ea640597a/mooncake-store/src/master_service.cpp)

## Related threats

- [Mooncake Store missing authorization in disk replica eviction](https://junglewise.ai/threats/cve-2026-106040-mooncake-store-master-through-0-3-13-post1-contains-a-missing)
- [Mooncake Store missing authorization in coro_rpc port](https://junglewise.ai/threats/cve-2026-106039-mooncake-store-master-through-0-3-13-post1-contains-a-missing)
- [Mooncake Store missing authentication in deletion operations](https://junglewise.ai/threats/cve-2026-106038-mooncake-store-master-through-0-3-13-post1-contains-a-missing)