Security Updates for Power BI Report Server (July 2026)

##
# (C) Tenable, Inc.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(331921);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/05");

  script_cve_id("CVE-2026-58647");
  script_xref(name:"IAVA", value:"2026-A-0716");

  script_name(english:"Security Updates for Power BI Report Server (July 2026)");

  script_set_attribute(attribute:"synopsis", value:
"The Power BI Report Server installation on the remote host is affected by a spoofing vulnerability.");
  script_set_attribute(attribute:"description", value:
"The Power BI Report Server installation on the remote host is
missing a security update. It is, therefore, affected by a spoofing
vulnerability:

  - Improper neutralization of input during web page generation
('cross-site scripting') in Power BI allows an authorized
attacker to perform spoofing over a network. (CVE-2026-58647)

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-2026-58647");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Microsoft Power BI Report Server version 1.26.9682.1442 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/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:R/S:C/C:L/I:L/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-2026-58647");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(79);

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/07/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/07/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/04");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:power_bi_report_server");
  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_power_bi_rs_win_installed.nbin");
  script_require_keys("installed_sw/Microsoft Power BI Report Server");

  exit(0);
}

include('vcf.inc');

var app_info = vcf::get_app_info(app:'Microsoft Power BI Report Server', win_local:TRUE);

vcf::check_granularity(app_info:app_info, sig_segments:4);

var constraints = [
  {'fixed_version': '1.26.9682.1442'}
];

vcf::check_version_and_report(app_info:app_info,
                              constraints:constraints,
                              severity:SECURITY_WARNING,
                              flags:{xss:TRUE});