Next.js Framework 13.x < 15.5.16 / 16.x < 16.2.5 XSS

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

include('compat.inc');

if (description)
{
  script_id(314906);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/05/18");

  script_cve_id("CVE-2026-44580");
  script_xref(name:"IAVA", value:"2026-A-0443");

  script_name(english:"Next.js Framework 13.x < 15.5.16 / 16.x < 16.2.5 XSS");

  script_set_attribute(attribute:"synopsis", value:
"The Next.js Framework on the remote host is affected by a cross-site scripting vulnerability.");
  script_set_attribute(attribute:"description", value:
"The Next.js Framework on the remote host is affected by a cross-site scripting vulnerability:

  - Applications that use beforeInteractive scripts together with untrusted content can be vulnerable to cross-site
    scripting. In affected versions, serialized script content was not escaped safely before being embedded into the
    document, which could allow attacker-controlled input to break out of the intended script context and execute
    arbitrary JavaScript in a visitor's browser. (CVE-2026-44580)

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/vercel/next.js/security/advisories/GHSA-gx5p-jg67-6x7h
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?792cf653");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Next.js Framework version 15.5.16 or 16.2.5 or later.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/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:N/UI:R/S:C/C:L/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-44580");

  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:"2026/05/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/05/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/05/15");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:vercel:next.js");
  script_set_attribute(attribute:"stig_severity", value:"I");
  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("Host/nodejs/modules/enumerated");

  exit(0);
}

include('vcf_extras_nodejs.inc');

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

vcf::add_separator('-');
vcf::add_conversions({'canary':-25});

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

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

var constraints = [
  {'min_version':'13.0.0', 'fixed_version':'15.5.16'},
  {'min_version':'16.0.0', 'fixed_version':'16.2.5'}
];

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