Splunk Enterprise 9.3.0 < 9.3.13, 9.4.0 < 9.4.12, 10.0.0 < 10.0.7, 10.2.0 < 10.2.4 (SVD-2026-0601)

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

include('compat.inc');

if (description)
{
  script_id(320378);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/12");

  script_cve_id("CVE-2026-20251");
  script_xref(name:"IAVA", value:"2026-A-0593");

  script_name(english:"Splunk Enterprise 9.3.0 < 9.3.13, 9.4.0 < 9.4.12, 10.0.0 < 10.0.7, 10.2.0 < 10.2.4 (SVD-2026-0601)");

  script_set_attribute(attribute:"synopsis", value:
"An application running on a remote web server host is affected by a vulnerability");
  script_set_attribute(attribute:"description", value:
"The version of Splunk installed on the remote host is prior to tested version. It is, therefore, affected by a
vulnerability as referenced in the SVD-2026-0601 advisory.

  - In Splunk Enterprise versions below 10.2.4, 10.0.7, 9.4.12, and 9.3.13, Splunk Cloud Platform versions
    below 10.3.2512.12, 10.2.2510.14, 10.1.2507.22, and 9.3.2411.132, and Splunk Secure Gateway versions below
    3.10.6, 3.9.20, and 3.8.67, a low-privileged user that does not hold the admin' or power' Splunk roles
    could perform a Remote Code Execution (RCE) through the Splunk Secure Gateway app.The Remote Code
    Execution is possible because of unsafe deserialization of App Key Value Store (KV Store) data through the
    jsonpickle' Python library, which reconstructs arbitrary Python objects from specially crafted JavaScript
    Object Notation (JSON) without adequate validation.See App Key Value Store and About role-based user
    access in the Splunk documentation for more information. (CVE-2026-20251)

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://advisory.splunk.com/advisories/SVD-2026-0601.html");
  script_set_attribute(attribute:"solution", value:
"Upgrade Splunk Enterprise to versions 10.4.0, 10.2.4, 10.0.7, 9.4.12, and 9.3.13, or higher.Splunk is actively
monitoring and patching Splunk Cloud Platform instances.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/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:L/PR:L/UI:N/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:"cvss_score_source", value:"CVE-2026-20251");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(502);

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/06/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/10");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:splunk:splunk");
  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("splunkd_detect.nasl", "splunk_web_detect.nasl", "macos_splunk_installed.nbin", "splunk_win_installed.nbin", "splunk_nix_installed.nbin");
  script_require_keys("installed_sw/Splunk", "Settings/ParanoidReport");

  exit(0);
}

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

if (report_paranoia < 2) audit(AUDIT_PARANOID);

var app_info = vcf::splunk::get_app_info();

var constraints = [
  { 'min_version' : '9.3.0', 'fixed_version' : '9.3.13', 'license' : 'Enterprise' },
  { 'min_version' : '9.4.0', 'fixed_version' : '9.4.12', 'license' : 'Enterprise' },
  { 'min_version' : '10.0.0', 'fixed_version' : '10.0.7', 'license' : 'Enterprise' },
  { 'min_version' : '10.2.0', 'fixed_version' : '10.2.4', 'license' : 'Enterprise' }
];
vcf::splunk::check_version_and_report(
    app_info:app_info,
    constraints:constraints,
    severity:SECURITY_HOLE
);