# CVE-2025-53637: Meshtastic allows Command Injection in GitHub Action

> Attackers can inject unauthorized code into the repository via unsafe input interpolation in a GitHub Action triggered by pull requests.

- **Severity:** Medium 4.1 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 10 Jul 2025
- **Updated:** 11 Jul 2025
- **Also known as:** GHSA-6mwm-v2vv-pp96

## What is CVE-2025-53637?

CVE-2025-53637 is a medium-severity command injection vulnerability in meshtastic firmware, published on 10 Jul 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Meshtastic is an open source mesh networking solution. The main_matrix.yml GitHub Action is triggered by the pull_request_target event, which has extensive permissions, and can be initiated by an attacker who forked the repository and created a pull request. In the shell code execution part, user-controlled input is interpolated unsafely into the code. If this were to be exploited, attackers could inject unauthorized code into the repository. This vulnerability is fixed in 2.6.6.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2025-53637?

It affects 1 product.


Products: Meshtastic Meshtastic Firmware.

## How do I fix CVE-2025-53637?

No fix has been published for CVE-2025-53637 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-53637 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-53637 exists.

## Other vulnerabilities in meshtastic firmware

- [CVE-2025-52464](https://insights.sbomify.com/CVE-2025-52464/): Meshtastic Repeated Public and Private Keypairs (critical 9.5)
- [CVE-2025-55293](https://insights.sbomify.com/CVE-2025-55293/): Meshtastic allows crafting of specific NodeInfo packets that overwrite any publicKey saved in the NodeDB (critical 9.4)
- [CVE-2025-24797](https://insights.sbomify.com/CVE-2025-24797/): Meshtastic incorrectly hands malformed packets leads to controlled buffer overflow (critical 9.4)
- [CVE-2025-55292](https://insights.sbomify.com/CVE-2025-55292/): In Meshtastic, an attacker can spoof licensed amateur flag for a node (high 8.2)
- [CVE-2024-47078](https://insights.sbomify.com/CVE-2024-47078/): Meshtastic firmware Authentication/Authorization Bypass via MQTT (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-53637 and fix it if it is affected.

What it is: CVE-2025-53637 is a medium-severity command injection vulnerability in meshtastic firmware, published on 10 Jul 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-53637 exists.

Affected product: meshtastic 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-2025-53637/ (Markdown: https://insights.sbomify.com/CVE-2025-53637/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-53637
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-53637
- OSV: https://osv.dev/vulnerability/CVE-2025-53637

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-53637/
Summaries are generated and may contain mistakes; the official description above is the record.