Vulnerability-Lookup

GHSA-48FH-2C4X-8WCM

Vulnerability from github – Published: 2026-10-30 12:31 – Updated: 2026-10-30 12:31

Details

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.

Severity

8.8 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8.7 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-119408"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-653"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-30T12:16:37Z",
    "severity": "HIGH"
  },
  "details": "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.",
  "id": "GHSA-48fh-2c4x-8wcm",
  "modified": "2026-10-30T12:31:17Z",
  "published": "2026-10-30T12:31:17Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-9p7v-45m2-wxgj"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-119408"
    },
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/commit/ea8417e29ad6f8b981d9a04b17283d5d77f2b5bb"
    },
    {
      "type": "WEB",
      "url": "https://abraxaslabs.tech/research/n8n-function-vm2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n"
    },
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/blob/n8n@2.42.0/packages/nodes-base/nodes/Function/Function.node.ts#L167"
    },
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/releases/tag/n8n@2.42.6"
    },
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/releases/tag/n8n@2.43.3"
    },
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/releases/tag/n8n@3.0.1"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/n8n-before-2.42.6-2.43.3-and-3.0.1-code-execution-outside-task-runner-isolation-via-deprecated-function-nodes"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-119408 (GCVE-0-2026-119408)

Vulnerability from cvelistv5 – Published: 2026-10-30 11:30 – Updated: 2026-10-30 11:30

Title

n8n before 2.42.6, 2.43.3 and 3.0.1 Code Execution Outside Task Runner Isolation via Deprecated Function Nodes

Summary

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-653 - Improper Isolation or Compartmentalization

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 7181 records in the last 180 days details

References

9 references

URL	Tags
https://github.com/n8n-io/n8n/security/advisories…	vendor-advisory
https://github.com/n8n-io/n8n/commit/ea8417e29ad6…	patch
https://github.com/n8n-io/n8n/blob/n8n@2.42.0/pac…	technical-description
https://github.com/n8n-io/n8n/releases/tag/n8n@2.42.6	release-notes
https://github.com/n8n-io/n8n/releases/tag/n8n@2.43.3	release-notes
https://github.com/n8n-io/n8n/releases/tag/n8n@3.0.1	release-notes
https://abraxaslabs.tech/research/n8n-function-vm2	third-party-advisory
https://github.com/n8n-io/n8n	product
https://www.vulncheck.com/advisories/n8n-before-2…	third-party-advisory

Impacted products

3 products

Vendor	Product	Version
n8n-io	n8n	Affected: 2.43.0 , < 2.43.3 (semver) Unaffected: 2.43.3 (semver)
n8n-io	n8n	Affected: 0 , < 2.42.6 (semver) Unaffected: 2.42.6 (semver)
n8n-io	n8n	Affected: 3.0.0 , < 3.0.1 (semver) Unaffected: 3.0.1 (semver)

Date Public

2026-10-28 00:00

Credits

Abraxas Labs mfsiega

Show details on NVD website

JSON

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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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