# CVE-2026-7157: disler aider-mcp-server aider_ai_code server.py command injection

> Remote attackers can execute arbitrary commands via the relative_editable_files argument in the aider-mcp-server library.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 27 Apr 2026
- **Updated:** 29 Apr 2026
- **Also known as:** GHSA-cqv7-q5jh-6mfp

## What is CVE-2026-7157?

CVE-2026-7157 is a medium-severity command injection vulnerability in disler aider-mcp-server, published on 27 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A flaw has been found in disler aider-mcp-server up to b2516fa466d0d851932da92ee6d0e66946db9efc. Affected by this vulnerability is an unknown functionality of the file src/aider_mcp_server/server.py of the component aider_ai_code. This manipulation of the argument relative_editable_files causes command injection. Remote exploitation of the attack is possible. The exploit has been published and may be used. This product follows a rolling release approach for continuous delivery, so version details for affected or updated releases are not provided. The project was informed of the problem early through an issue report but has not responded yet.

Weakness: CWE-77 (Improper Neutralization of Special Elements used in a Command), CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component)

## Which versions are affected by CVE-2026-7157?


## How do I fix CVE-2026-7157?

No fix has been published for CVE-2026-7157 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-7157 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7157 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-7157 and fix it if it is affected.

What it is: CVE-2026-7157 is a medium-severity command injection vulnerability in disler aider-mcp-server, published on 27 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7157 exists.

Affected product: disler aider-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-2026-7157/ (Markdown: https://insights.sbomify.com/CVE-2026-7157/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-7157
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-7157
- OSV: https://osv.dev/vulnerability/CVE-2026-7157

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-7157/
Summaries are generated and may contain mistakes; the official description above is the record.