Neo4j < 2026.01 XSS Vulnerability (CVE-2026-1337)

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

include('compat.inc');

if (description)
{
  script_id(298971);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/03/02");

  script_cve_id("CVE-2026-1337");
  script_xref(name:"IAVB", value:"2026-B-0036");

  script_name(english:"Neo4j < 2026.01 XSS Vulnerability (CVE-2026-1337)");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server is affected by a XSS vulnerability");
  script_set_attribute(attribute:"description", value:
"According to its its self-reported version number, the version of Neo4j running on the
remote host is a version prior to 2026.01. It is, therefore, affected by a XSS vulnerability 
where Insufficient escaping of unicode characters in query log in Neo4j Enterprise and Community 
editions.
    
Note that Nessus has not tested for these issues but has instead
relied only on the application's self-reported version number");
  script_set_attribute(attribute:"see_also", value:"https://neo4j.com/security/cve-2026-1337/");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Neo4j version 2026.01 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:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:P");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-1337");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/02/04");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/02/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/02/13");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:neo4j:neo4j");
  script_set_attribute(attribute:"stig_severity", value:"II");
  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("neo4j_detect.nbin");
  script_require_keys("installed_sw/Neo4j");
  script_require_ports("Services/www", 7474);

  exit(0);
}

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

var port = get_http_port(default:7474);
var app_info = vcf::get_app_info(app:'Neo4j', port:port, webapp:TRUE);
var ver = app_info['version'];

# regex to match a 2026.x.x format that is on a different release version to a 5.1.2 format
var regex_version = ".*(\d{4}).*";

if (ver =~ regex_version)
{
    var constraints = [{ 'min_version': '2025.11', 'fixed_version' : '2026.01.4' }];
}
else
{
  audit(AUDIT_INST_VER_NOT_VULN);
}

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