Microsoft Visual Studio Code CoPilot Chat Extension < 0.37.3 Information Disclosure (CVE-2026-23653)

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

include('compat.inc');

if (description)
{
  script_id(306455);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/05/13");

  script_cve_id("CVE-2026-23653");
  script_xref(name:"IAVA", value:"2026-A-0353");

  script_name(english:"Microsoft Visual Studio Code CoPilot Chat Extension < 0.37.3 Information Disclosure (CVE-2026-23653)");

  script_set_attribute(attribute:"synopsis", value:
"The remote host has an application installed that is affected by an information disclosure vulnerability.");
  script_set_attribute(attribute:"description", value:
"The Microsoft Visual Studio Code CoPilot Chat Extension installed on the remote host is prior to 0.37.3. It is,
therefore, affected by an information disclosure vulnerability:

  - A remote, authenticated attacker can exploit this vulnerability to disclose sensitive information. User
    interaction is required. (CVE-2026-23653)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23653");
  script_set_attribute(attribute:"solution", value:
"Update the Microsoft Visual Studio Code CoPilot Chat Extension to version 0.37.3 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:N/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:U/C:H/I:N/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:P/VC:H/VI:N/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-2026-23653");

  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:"2026/04/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/04/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/04/14");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:visual_studio_code");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:github_copilot_chat");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

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

  script_dependencies("microsoft_visual_studio_code_win_extensions_installed.nbin");
  script_require_keys("installed_sw/Microsoft Visual Studio Code");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'requires': [
    {'scope': 'target', 'match': {'os': 'windows'}}
  ],
  'checks': [
    {
      'product': {'name': 'vs-code::copilot-chat', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'fixed_version': '0.37.3'}
      ]
    }
  ]
};

var vdf_result = vdf::check_and_report(vuln_data:vuln_data, severity:SECURITY_WARNING);
vdf::handle_check_and_report_errors(vdf_result:vdf_result);