Kibana 8.x < 8.18.9 / 8.19.x < 8.19.6 / 9.0.x < 9.0.8 / 9.1.x < 9.1.6 Information Disclosure (ESA-2026-50)

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

include('compat.inc');

if (description)
{
  script_id(326281);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/13");

  script_cve_id("CVE-2026-49088");
  script_xref(name:"IAVB", value:"2026-B-0187");

  script_name(english:"Kibana 8.x < 8.18.9 / 8.19.x < 8.19.6 / 9.0.x < 9.0.8 / 9.1.x < 9.1.6 Information Disclosure (ESA-2026-50)");

  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.x prior to 8.18.9, 8.19.x prior to 8.19.6, 9.0.x prior to
9.0.8, or 9.1.x prior to 9.1.6. It is, therefore, affected by an information disclosure vulnerability:

  - Insertion of Sensitive Information into Log File (CWE-532) in Kibana can lead to information disclosure. When the
    optional application performance monitoring (APM) instrumentation is enabled, sensitive request header values could
    be recorded in application logs, where they may be accessible to operators with log access. (CVE-2026-49088)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://discuss.elastic.co/t/kibana-8-18-9-8-19-6-9-0-8-9-1-6-security-update-esa-2026-50
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?acaecdf1");
  script_set_attribute(attribute:"solution", value:
"Update to Kibana version 8.18.9, 8.19.6, 9.0.8, 9.1.6, or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:M/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:H/PR:H/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-2026-49088");

  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:"2026/07/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/07/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/10");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:elasticsearch:kibana");
  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");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'checks': [
    {
      'product': {'name': 'Kibana', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'min_version': '8.0.0', 'fixed_version': '8.18.9'},
        {'min_version': '8.19.0', 'fixed_version': '8.19.6'},
        {'min_version': '9.0.0', 'fixed_version': '9.0.8'},
        {'min_version': '9.1.0', 'fixed_version': '9.1.6'}
      ]
    }
  ]
};

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