# CVE-2026-7415: Open MQTT orchestration without read/write ACLs in Yarbo robot firmware

> Attackers on the local network can read telemetry and control Yarbo robots without authentication due to missing MQTT access controls.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 May 2026
- **Updated:** 7 May 2026
- **Also known as:** GHSA-5jxr-5v22-49gf

## What is CVE-2026-7415?

CVE-2026-7415 is a critical missing authorization vulnerability in Yarbo Firmware, published on 7 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The MQTT broker embedded in Yarbo firmware v2.3.9 is configured to allow anonymous connections with no topic-level read or write ACLs. Any host on the same network can subscribe to sensitive telemetry topics or publish control messages directly to the robot without authentication or authorization of any kind.

Weakness: CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2026-7415?

It affects 2 products.


Products: Yarbo Lawn Mower Firmware, Yarbo Lawn Mower Pro Firmware.

## How do I fix CVE-2026-7415?

No fix has been published for CVE-2026-7415 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-7415 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7415 exists.

## Other vulnerabilities in Yarbo Firmware

- [CVE-2026-7414](https://insights.sbomify.com/CVE-2026-7414/): Hardcoded credentials in Yarbo robot firmware (critical 9.8)
- [CVE-2026-7413](https://insights.sbomify.com/CVE-2026-7413/): Persistent undocumented backdoor access in Yarbo robot (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-7415 and fix it if it is affected.

What it is: CVE-2026-7415 is a critical missing authorization vulnerability in Yarbo Firmware, published on 7 May 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-2026-7415 exists.

Affected product: Yarbo Firmware. 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-2026-7415/ (Markdown: https://insights.sbomify.com/CVE-2026-7415/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-7415
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-7415
- OSV: https://osv.dev/vulnerability/CVE-2026-7415

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-7415/
Summaries are generated and may contain mistakes; the official description above is the record.