# CVE-2026-5208: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in coolercontrold

> Authenticated attackers can execute arbitrary code as root via injected bash commands in alert names within CoolerControl.

- **Severity:** High 8.2 (`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Apr 2026
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-745q-62mf-gxpx

## What is CVE-2026-5208?

CVE-2026-5208 is a high-severity command injection vulnerability in coolercontrold, published on 8 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Command injection in alerts in CoolerControl/coolercontrold <4.0.0 allows authenticated attackers to execute arbitrary code as root via injected bash commands in alert names

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

## Which versions are affected by CVE-2026-5208?

It affects 1 product.


Products: Coolercontrol Coolercontrold.

## How do I fix CVE-2026-5208?

No fix has been published for CVE-2026-5208 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-5208 being exploited?

There is no known exploitation of CVE-2026-5208 in the wild and no public exploit code.

## Other vulnerabilities in coolercontrold

- [CVE-2026-5301](https://insights.sbomify.com/CVE-2026-5301/): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in coolercontrol-ui (high 7.6)
- [CVE-2026-5302](https://insights.sbomify.com/CVE-2026-5302/): Permissive Cross-domain Policy with Untrusted Domains in coolercontrold (medium 6.3)
- [CVE-2026-5300](https://insights.sbomify.com/CVE-2026-5300/): Missing Authentication for Critical Function in coolercontrold (medium 5.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-5208 and fix it if it is affected.

What it is: CVE-2026-5208 is a high-severity command injection vulnerability in coolercontrold, published on 8 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-5208 in the wild and no public exploit code.

Affected product: coolercontrold. 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-2026-5208/ (Markdown: https://insights.sbomify.com/CVE-2026-5208/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-5208
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-5208
- OSV: https://osv.dev/vulnerability/CVE-2026-5208

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-5208/
Summaries are generated and may contain mistakes; the official description above is the record.