Zabbix 7.0.x < 7.0.24 / 7.4.x < 7.4.8 XSS (ZBX-27758)

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

include('compat.inc');

if (description)
{
  script_id(314955);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/05/18");

  script_cve_id("CVE-2026-23926");
  script_xref(name:"IAVA", value:"2026-A-0438");

  script_name(english:"Zabbix 7.0.x < 7.0.24 / 7.4.x < 7.4.8 XSS (ZBX-27758)");

  script_set_attribute(attribute:"synopsis", value:
"A monitoring application installed on the remote host is affected by a cross-site scripting vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Zabbix Server installed on the remote host is prior to 7.0.24, 7.4.8. It is, therefore, affected by a
stored cross-site scripting (XSS) vulnerability. An authenticated (non-super) administrator can create a maintenance
period with a JavaScript payload that is executed by any user that opens tooltip for that maintenance period in the
Host navigator widget. This can allow the attacker to perform unauthorized actions depending on which user opens the
tooltip.

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://support.zabbix.com/browse/ZBX-27758");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Zabbix version 7.0.24, 7.4.8 or later.");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P");
  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:R/S:U/C:H/I:H/A:H");
  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:P/PR:H/UI:P/VC:H/VI:H/VA:H/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-2026-23926");

  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:"2026/05/06");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/05/06");
  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:zabbix:zabbix_server");
  script_set_attribute(attribute:"stig_severity", value:"I");
  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("zabbix_server_nix_installed.nbin");
  script_require_keys("installed_sw/Zabbix Server");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'requires': [{'scope': 'target', 'match': {'os': 'linux'}}],
  'checks': [
    {
      'product': {'name': 'Zabbix Server', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'min_version':'7.0.0', 'fixed_version':'7.0.24'},
        {'min_version':'7.4.0', 'fixed_version':'7.4.8'}
      ]
    }
  ]
};

var result = vdf::check_and_report(vuln_data:vuln_data, severity:SECURITY_WARNING, flags:{"xss":TRUE});
vdf::handle_check_and_report_errors(vdf_result:result);