# CVE-2026-7591: TimBroddin astro-mcp-server MCP Tool Query Construction index.ts sql injection

> Remote attackers can execute arbitrary SQL commands via manipulated arguments in the MCP Tool Query Construction component of astro-mcp-server.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/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:** 1 May 2026
- **Updated:** 1 May 2026
- **Also known as:** GHSA-7qqr-jg5c-wx37

## What is CVE-2026-7591?

CVE-2026-7591 is a medium-severity SQL injection vulnerability in TimBroddin astro-mcp-server, published on 1 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A security flaw has been discovered in TimBroddin astro-mcp-server up to 1.1.1. The impacted element is an unknown function of the file src/index.ts of the component MCP Tool Query Construction. Performing a manipulation of the argument request.params.arguments results in sql injection. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

Weakness: CWE-89 (Improper Neutralization of Special Elements used in an SQL Command), CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component)

## Which versions are affected by CVE-2026-7591?


## How do I fix CVE-2026-7591?

No fix has been published for CVE-2026-7591 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-7591 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7591 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-7591 and fix it if it is affected.

What it is: CVE-2026-7591 is a medium-severity SQL injection vulnerability in TimBroddin astro-mcp-server, published on 1 May 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-2026-7591 exists.

Affected product: TimBroddin astro-mcp-server. 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-2026-7591/ (Markdown: https://insights.sbomify.com/CVE-2026-7591/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-7591
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-7591
- OSV: https://osv.dev/vulnerability/CVE-2026-7591

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-7591/
Summaries are generated and may contain mistakes; the official description above is the record.