Kibana 7.x < 7.17.15 / 8.x < 8.11.1 Log Injection (ESA-2026-53)

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

include('compat.inc');

if (description)
{
  script_id(326284);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/13");

  script_cve_id("CVE-2026-49091");
  script_xref(name:"IAVB", value:"2026-B-0187");

  script_name(english:"Kibana 7.x < 7.17.15 / 8.x < 8.11.1 Log Injection (ESA-2026-53)");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by a log injection vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Kibana installed on the remote host is 7.x prior to 7.17.15 or 8.x prior to 8.11.1. It is, therefore,
affected by a log injection vulnerability:

  - Improper Output Neutralization for Logs (CWE-117) in Kibana can lead to log injection. An attacker can supply
    specially crafted input that is written to log files without proper neutralization. When the log files are
    subsequently viewed in a terminal that interprets control sequences, the injected content may alter the displayed
    log data. (CVE-2026-49091)

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-7-17-15-8-11-1-security-update-esa-2026-53
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?1cbfed96");
  script_set_attribute(attribute:"solution", value:
"Update to Kibana version 7.17.15, 8.11.1, or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:S/C:C/I:C/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:H/PR:L/UI:R/S:C/C:H/I:H/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-2026-49091");

  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': '7.0.0', 'fixed_version': '7.17.15'},
        {'min_version': '8.0.0', 'fixed_version': '8.11.1'}
      ]
    }
  ]
};

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