# CVE-2026-79755: Nuclio: Unauthenticated OS command injection via function namespace in docker ps --filter label (local Docker platform)

> Remote attackers can execute arbitrary OS commands as root via unvalidated namespace input in Nuclio's Docker platform, leading to host compromise.

- **Severity:** High 8.0 (`CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Sep 2026
- **Updated:** 4 Sep 2026
- **Also known as:** GHSA-2893-rq73-w22x

## What is CVE-2026-79755?

CVE-2026-79755 is a high-severity command injection vulnerability in nuclio, published on 2 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Nuclio is a "Serverless" framework for Real-Time Events and Data Processing. Prior to version 1.17.4, on the Nuclio local Docker platform, the function namespace is interpolated—unvalidated—into a double-quoted docker ps --filter "label=nuclio.io/namespace=<value>" command that is executed via the host shell (/bin/sh -c). Because the default auth kind is nop (unauthenticated), a remote attacker can inject arbitrary OS commands that run as root inside the dashboard container, which holds the Docker socket → host compromise. This issue has been patched in version 1.17.4.

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

## Which versions are affected by CVE-2026-79755?


## How do I fix CVE-2026-79755?

No fix has been published for CVE-2026-79755 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-79755 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-79755 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-79755 and fix it if it is affected.

What it is: CVE-2026-79755 is a high-severity command injection vulnerability in nuclio, published on 2 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-79755 exists.

Affected product: nuclio. 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-2026-79755/ (Markdown: https://insights.sbomify.com/CVE-2026-79755/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-79755
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-79755
- OSV: https://osv.dev/vulnerability/CVE-2026-79755

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-79755/
Summaries are generated and may contain mistakes; the official description above is the record.