# CVE-2026-77810: Code Injection via Gremlin Query Passthrough in Amazon Athena Neptune Connector

> Attackers with Neptune access via Athena can inject code to execute arbitrary commands and escalate privileges within the connector's Lambda environment.

- **Severity:** Critical 9.4 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`)
- **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:** 21 Aug 2026
- **Updated:** 27 Aug 2026
- **Also known as:** GHSA-v7c2-5wfg-qg44

## What is CVE-2026-77810?

CVE-2026-77810 is a critical code injection vulnerability in AWS Athena Federated Query Neptune Connector, published on 21 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

In the Neptune connector, a user with access to Neptune through Athena Federated Query could gain access to properties in the Lambda supplying the compute for the connector. To remediate this issue, users should upgrade to aws-athena-query-federation v2026.30.1 or later.

Weakness: CWE-95 (Improper Neutralization of Directives in Dynamically Evaluated Code)

## Which versions are affected by CVE-2026-77810?


## How do I fix CVE-2026-77810?

No fix has been published for CVE-2026-77810 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-77810 being exploited?

There is no known exploitation of CVE-2026-77810 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-77810 and fix it if it is affected.

What it is: CVE-2026-77810 is a critical code injection vulnerability in AWS Athena Federated Query Neptune Connector, published on 21 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-77810 in the wild and no public exploit code.

Affected product: AWS Athena Federated Query Neptune Connector. 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-2026-77810/ (Markdown: https://insights.sbomify.com/CVE-2026-77810/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-77810
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-77810
- OSV: https://osv.dev/vulnerability/CVE-2026-77810

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-77810/
Summaries are generated and may contain mistakes; the official description above is the record.