Node.js Module Undici 8.1.x < 8.5.0 DoS (CVE-2026-9675)

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

include('compat.inc');

if (description)
{
  script_id(322410);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/25");

  script_cve_id("CVE-2026-9675");

  script_name(english:"Node.js Module Undici 8.1.x < 8.5.0 DoS (CVE-2026-9675)");

  script_set_attribute(attribute:"synopsis", value:
"A module in the Node.js JavaScript run-time environment is affected by a denial of service vulnerability.");
  script_set_attribute(attribute:"description", value:
"The nodejs module Undici detected on the host is version 8.1.x prior to 8.5.0. It is, therefore, affected by a denial
of service vulnerability:

  - The undici WebSocket client enforces maxPayloadSize per-frame but does not enforce the cumulative size of
    fragmented uncompressed messages. A malicious WebSocket server can stream many small fragments that each
    pass per-frame validation but collectively exceed the configured limit, causing unbounded memory growth in
    the client process. (CVE-2026-9675)

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/nodejs/undici/security/advisories/GHSA-38rv-x7px-6hhq
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?32251edb");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Undici version 8.5.0 or later.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  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:N/UI:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-9675");

  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:"2026/06/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/24");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"asset_categories", value:"component");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:undici:undici");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  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("installed_sw/Node.js", "Host/nodejs/modules/enumerated");

  exit(0);
}

include('vcf_extras_nodejs.inc');

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

if (empty_or_null(app_info))
  audit(AUDIT_NOT_INST, 'undici');

vcf::check_all_backporting(app_info:app_info);

var constraints = [
  {'min_version': '8.1.0', 'fixed_version': '8.5.0'}
];

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