GHSA-7C4H-VH2M-743M

Vulnerability from github – Published: 2026-02-04 17:49 – Updated: 2026-02-04 19:53
VLAI?
Summary
n8n Vulnerable to Command Injection in Community Package Installation
Details

Impact

A Command Injection vulnerability was identified in n8n’s community package installation functionality. The issue allowed authenticated users with administrative permissions to execute arbitrary system commands on the n8n host under specific conditions.

Important context

  • Exploitation requires administrative access to the n8n instance.
  • The affected functionality is restricted to trusted users who are already permitted to install third-party community packages.
  • No unauthenticated or low-privilege exploitation is possible.
  • There is no evidence of exploitation in the wild.

Because administrative users can already extend n8n with custom or community code, the vulnerability does not meaningfully expand the threat model beyond existing administrator capabilities. However, it represents a violation of secure coding practices and has therefore been addressed.

Patches

Users are advised to upgrade to n8n version 1.120.3 or later, which fully resolves the issue.

As a general security best practice, n8n instance owners should ensure that: - Administrative access is limited to trusted users only. - Community packages are installed only from trusted sources. - Instances are kept up to date with the latest security releases.

Severity ?
9.4 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "n8n"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.187.0"
            },
            {
              "fixed": "1.120.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-21893"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20",
      "CWE-78"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-04T17:49:38Z",
    "nvd_published_at": "2026-02-04T18:16:08Z",
    "severity": "CRITICAL"
  },
  "details": "### Impact\nA Command Injection vulnerability was identified in n8n\u2019s community package installation functionality. The issue allowed authenticated users with administrative permissions to execute arbitrary system commands on the n8n host under specific conditions.\n\n**Important context**\n\n- Exploitation requires _administrative_ access to the n8n instance.\n- The affected functionality is restricted to trusted users who are already permitted to install third-party community packages.\n- No unauthenticated or low-privilege exploitation is possible.\n- There is no evidence of exploitation in the wild.\n\nBecause administrative users can already extend n8n with custom or community code, the vulnerability does not meaningfully expand the threat model beyond existing administrator capabilities. However, it represents a violation of secure coding practices and has therefore been addressed.\n\n### Patches\nUsers are advised to upgrade to n8n version 1.120.3 or later, which fully resolves the issue.\n\nAs a general security best practice, n8n instance owners should ensure that:\n- Administrative access is limited to trusted users only.\n- Community packages are installed only from trusted sources.\n- Instances are kept up to date with the latest security releases.",
  "id": "GHSA-7c4h-vh2m-743m",
  "modified": "2026-02-04T19:53:12Z",
  "published": "2026-02-04T17:49:38Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-7c4h-vh2m-743m"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21893"
    },
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/commit/ae0669a736cc496beeb296e115267862727ae838"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/n8n-io/n8n"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
      "type": "CVSS_V4"
    }
  ],
  "summary": "n8n Vulnerable to Command Injection in Community Package Installation"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.



Detection rules are retrieved from Rulezet.