# CVE-2026-18038: nextlevelbuilder GoClaw jq Handler tools_invoke.go ExecTool.Execute information disclosure

> Remote attackers can exploit the jq Handler in GoClaw to disclose sensitive information, requiring a patch to mitigate the risk.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/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:** 28 Jul 2026
- **Updated:** 28 Jul 2026
- **Also known as:** GHSA-r4xf-9fv3-cx9j

## What is CVE-2026-18038?

CVE-2026-18038 is a medium-severity vulnerability in nextlevelbuilder GoClaw, published on 28 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A flaw has been found in nextlevelbuilder GoClaw up to 3.13.2. Affected by this vulnerability is the function ExecTool.Execute of the file goclaw/internal/http/tools_invoke.go of the component jq Handler. Executing a manipulation can lead to information disclosure. The attack can be launched remotely. The exploit has been published and may be used. This patch is called 1230. It is advisable to implement a patch to correct this issue.

Weakness: CWE-284 (Improper Access Control), CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2026-18038?


## How do I fix CVE-2026-18038?

No fix has been published for CVE-2026-18038 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-18038 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-18038 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-18038 and fix it if it is affected.

What it is: CVE-2026-18038 is a medium-severity vulnerability in nextlevelbuilder GoClaw, published on 28 Jul 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-2026-18038 exists.

Affected product: nextlevelbuilder GoClaw. 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-2026-18038/ (Markdown: https://insights.sbomify.com/CVE-2026-18038/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-18038
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-18038
- OSV: https://osv.dev/vulnerability/CVE-2026-18038

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-18038/
Summaries are generated and may contain mistakes; the official description above is the record.