Kibana 8.10.x < 8.19.24 / 9.0.x < 9.4.9 / 9.5.x < 9.5.6 Information Disclosure (ESA-2026-204)

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

include('compat.inc');

if (description)
{
  script_id(375651);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/11/06");

  script_cve_id("CVE-2026-115293");
  script_xref(name:"IAVB", value:"2026-B-0314");

  script_name(english:"Kibana 8.10.x < 8.19.24 / 9.0.x < 9.4.9 / 9.5.x < 9.5.6 Information Disclosure (ESA-2026-204)");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by an information disclosure vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Kibana installed on the remote host is 8.10.x prior to 8.19.24, or 9.0.x prior to 9.4.9, or 9.5.x prior
to 9.5.6. It is, therefore, affected by a vulnerability as referenced in the ESA-2026-204 advisory.

  - Insertion of Sensitive Information Into Sent Data (CWE-201) in Kibana Observability onboarding can lead to
    disclosure of the credentials that Kibana uses to connect to Elasticsearch. When these credentials are
    embedded in the Elasticsearch host URLs in the Kibana configuration, an authenticated user with the
    privileges to onboard Observability data can obtain them. The user can then access Elasticsearch directly
    with the privileges of the Kibana service account, which are outside the privileges granted to that user.
    (CVE-2026-115293)

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://discuss.elastic.co/t/391358");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Kibana version 8.19.24, 9.4.9, or 9.5.6 or later as appropriate for your release branch.");
  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:"cvss_score_source", value:"CVE-2026-115293");

  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:"2026/11/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/11/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/11/03");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:elasticsearch:kibana");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

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

  script_dependencies("kibana_web_detect.nbin");
  script_require_keys("installed_sw/Kibana");
  script_require_ports("Services/www", 5601);

  exit(0);
}

include('vcf.inc');
include('http.inc');

var app = 'Kibana';

get_install_count(app_name:app, exit_if_zero:TRUE);

var port = get_http_port(default:5601);

var app_info = vcf::get_app_info(app:app, port:port, webapp:TRUE);

var constraints = [
  { 'min_version' : '8.10.0', 'fixed_version' : '8.19.24' },
  { 'min_version' : '9.0.0', 'fixed_version' : '9.4.9' },
  { 'min_version' : '9.5.0', 'fixed_version' : '9.5.6' }
];

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