n8n Node.js Package < 1.123.48 / 2.x < 2.21.8 / 2.22.x < 2.22.4 Sandbox Escape (CVE-2026-49444)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(321510);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/26");

  script_cve_id("CVE-2026-49444");
  script_xref(name:"IAVB", value:"2026-B-0160");

  script_name(english:"n8n Node.js Package < 1.123.48 / 2.x < 2.21.8 / 2.22.x < 2.22.4 Sandbox Escape (CVE-2026-49444)");

  script_set_attribute(attribute:"synopsis", value:
"The n8n Node.js Package installed on the remote host is affected by a sandbox escape vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of the n8n Node.js Package installed on the remote host is prior to 1.123.48, or 2.x prior to 2.21.8, or
2.22.x prior to 2.22.4. It is, therefore, affected by a sandbox escape vulnerability:

  - A vulnerability in the Python sandbox allows authenticated users to escape the sandbox and execute arbitrary code on
    the n8n host. (CVE-2026-49444)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://github.com/n8n-io/n8n/security/advisories/GHSA-9pq8-m8gp-4p53
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?cf2d7174");
  script_set_attribute(attribute:"solution", value:
"Upgrade to n8n Node.js Package version 1.123.48, 2.21.8, or 2.22.4 or later.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-49444");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/05/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/05/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/18");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"asset_categories", value:"component");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:nodejs:node.js");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("nodejs_modules_win_installed.nbin", "nodejs_modules_linux_installed.nbin", "nodejs_modules_mac_installed.nbin");
  script_require_keys("Host/nodejs/modules/enumerated");

  exit(0);
}

include('vcf_extras_nodejs.inc');

get_kb_item_or_exit('Host/nodejs/modules/enumerated');

var app = 'n8n';
var app_info = vcf_extras::nodejs_modules::get_app_info(app:app);

if (empty_or_null(app_info))
  audit(AUDIT_NOT_INST, app);

var constraints = [
  {'fixed_version':'1.123.48'},
  {'min_version':'2.0.0', 'fixed_version':'2.21.8'},
  {'min_version':'2.22.0', 'fixed_version':'2.22.4'}
];

vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE);