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

> Unauthenticated attackers can delete disk replicas of any object via RPC, causing data loss or service disruption in Mooncake Store.

- **Severity:** High 8.8 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 Oct 2026
- **Updated:** 6 Oct 2026
- **Also known as:** GHSA-mx67-78cv-m3mg

## What is CVE-2026-106040?

CVE-2026-106040 is a high-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 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.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-106040?


## How do I fix CVE-2026-106040?

No fix has been published for CVE-2026-106040 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-106040 being exploited?

There is no known exploitation of CVE-2026-106040 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-106040 and fix it if it is affected.

What it is: CVE-2026-106040 is a high-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.
Exploitation: There is no known exploitation of CVE-2026-106040 in the wild and no public exploit code.

Affected product: kvcache-ai Mooncake. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-106040/ (Markdown: https://insights.sbomify.com/CVE-2026-106040/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-106040
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-106040
- OSV: https://osv.dev/vulnerability/CVE-2026-106040

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-106040/
Summaries are generated and may contain mistakes; the official description above is the record.