# CVE-2026-96764: kvcache-ai mooncake Regular Expression GetReplicaListByRegex allocation of resources

> Remote attackers can cause resource exhaustion and denial of service in the mooncake library via the GetReplicaListByRegex function.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Sep 2026
- **Updated:** 24 Sep 2026
- **Also known as:** GHSA-gqr3-xc87-48w2

## What is CVE-2026-96764?

CVE-2026-96764 is a medium-severity denial of service vulnerability in kvcache-ai mooncake, published on 24 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A weakness has been identified in kvcache-ai mooncake up to 0.3.12/0.3.14-rc1. Impacted is the function MasterService::GetReplicaListByRegex of the component Regular Expression Handler. Executing a manipulation can lead to allocation of resources. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-770 (Allocation of Resources Without Limits or Throttling), CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2026-96764?


## How do I fix CVE-2026-96764?

No fix has been published for CVE-2026-96764 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-96764 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-96764 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-96764 and fix it if it is affected.

What it is: CVE-2026-96764 is a medium-severity denial of service vulnerability in kvcache-ai mooncake, published on 24 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-96764 exists.

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-2026-96764/ (Markdown: https://insights.sbomify.com/CVE-2026-96764/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-96764
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-96764
- OSV: https://osv.dev/vulnerability/CVE-2026-96764

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-96764/
Summaries are generated and may contain mistakes; the official description above is the record.