CVE-2026-119408 n8n before 2.42.6, 2.43.3 and 3.0.1 Code Execution Outside Task Runner Isolation via Deprecated Function Nodes
High 8.7
Published
Updated
Check this codebase for CVE-2026-119408 and fix it if it is affected.
What it is: CVE-2026-119408 is a high-severity vulnerability in n8n-io n8n, published on 30 Oct 2026.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-119408 exists.
Affected product: n8n-io n8n. 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-2026-119408/ (Markdown: https://insights.sbomify.com/CVE-2026-119408/index.md)
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-119408?
CVE-2026-119408 is a high-severity vulnerability in n8n-io n8n, published on 30 Oct 2026.
Official description
n8n before 2.42.6, 2.43.x before 2.43.3, and 3.x before 3.0.1 contains a remote code execution vulnerability via deprecated Function, Function Item, and LangChain Code nodes running outside task runner isolation. Authenticated users who can create, modify, or import workflows naming these hidden node types can execute JavaScript in the n8n main process.
Weakness: CWE-653
Which versions are affected by CVE-2026-119408?
How do I fix CVE-2026-119408?
No fix has been published for CVE-2026-119408 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-119408 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-119408 exists.
Sources
Also known as GHSA-48fh-2c4x-8wcm, GHSA-9p7v-45m2-wxgj.