CVE-2026-119408: n8n remote code execution via LangChain Code nodes
n8n
n8n contains a remote code execution vulnerability via deprecated Function and LangChain Code nodes running outside task runner isolation. Authenticated users can execute JavaScript within the main process.
why this severityDisclosed vulnerability with vendor patch available, high CVSS 8.7.
disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why
- CVSS
- 8.7
- EPSS
- 0.01 · top 50% · 2026-11-13
- fix status
- Patched
- affected
- n8n < 2.42.6n8n 2.43.x < 2.43.3n8n 3.x < 3.0.1
- fixed in
- n8n 2.42.6n8n 2.43.3n8n 3.0.1
- first report
- 30 Oct 2026
- last update
- 30 Oct 2026
- CVE ids
What to do
Update n8n to version 2.42.6, 2.43.3, 3.0.1 or later.
Timeline · 1
Sources · 1
Advisories and databases
- 2026-10-30CVE-2026-119408: 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…NVD · nvd.nist.gov/vuln/detail/CVE-2026-119408
Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.
Classification
- lane
- Patch now
- AI role
- Attack on AI
- categories
- Infrastructure vulnerability
- severity
- 2 · Disclosed vulnerability
- fix status
- Patched
- targets
- Framework / tooling
- owasp llm top 10
- LLM03:2025 Supply Chain
- mitre atlas
- no technique for these categories
- dates
- happened 30 Oct 2026 · first reported 30 Oct 2026
- origin
- NVDVulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
- record
- confidence 0.95 · created 2026-10-30 13:27Z · updated 2026-10-30 13:27Z
Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned
Copy a brief
This record as a short Markdown brief, for a ticket, a chat or a coding agent.
the brief as text
# CVE-2026-119408: n8n remote code execution via LangChain Code nodes https://gcdradar.vercel.app/incidents/cve-2026-119408-n8n-remote-code-execution-via-langchain-code · AIR-2026-1667 · closed 2026-10-30 - Lane: Patch now - Severity: 2 (Disclosed vulnerability): Disclosed vulnerability with vendor patch available, high CVSS 8.7. - Fix status: Patched - First reported: 2026-10-30 - AI role: Attack on AI - Products: n8n - CVE ids: CVE-2026-119408 - CVSS: 8.7 ## Summary n8n contains a remote code execution vulnerability via deprecated Function and LangChain Code nodes running outside task runner isolation. Authenticated users can execute JavaScript within the main process. ## What to do Update n8n to version 2.42.6, 2.43.3, 3.0.1 or later. ## Affected and fixed versions - Affected: n8n < 2.42.6 - Affected: n8n 2.43.x < 2.43.3 - Affected: n8n 3.x < 3.0.1 - Fixed in: n8n 2.42.6 - Fixed in: n8n 2.43.3 - Fixed in: n8n 3.0.1 ## Latest updates - 2026-10-30: CVE-2026-119408: 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… (https://nvd.nist.gov/vuln/detail/CVE-2026-119408) ## Sources - 2026-10-30 NVD: CVE-2026-119408: 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… https://nvd.nist.gov/vuln/detail/CVE-2026-119408 Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.
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