JetBrains PyCharm < 2025.3.2 Jupyter Viewer DOM-based XSS

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

include('compat.inc');

if (description)
{
  script_id(299007);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/02/19");

  script_cve_id("CVE-2026-25847");
  script_xref(name:"IAVA", value:"2026-A-0148");

  script_name(english:"JetBrains PyCharm < 2025.3.2 Jupyter Viewer DOM-based XSS");

  script_set_attribute(attribute:"synopsis", value:
"The Python IDE installed on the remote host is affected by a cross-site scripting vulnerability.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version, the JetBrains PyCharm installation on the remote host is prior to 2025.3.2. 
It is, therefore, affected by a DOM-based Cross-Site Scripting (XSS) vulnerability in its Jupyter viewer page. 

The vulnerability exists due to improper neutralization of user-controllable input before it is placed in output 
used as a web page. A remote attacker could exploit this by convincing a user to view a specially crafted 
Jupyter notebook, allowing the execution of arbitrary JavaScript code within the context of the user's browser.

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://www.jetbrains.com/privacy-security/issues-fixed");
  script_set_attribute(attribute:"solution", value:
"Upgrade JetBrains PyCharm to version 2025.3.2 or later.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/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:N/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-2026-25847");

  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:"2026/02/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/02/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/02/13");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:jetbrains:pycharm");
  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("pycharm_macos_installed.nbin", "pycharm_win_installed.nbin");
  script_require_keys("Host/local_checks_enabled", "installed_sw/PyCharm");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'checks': [
    {
      'product': {'name': 'PyCharm', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'fixed_version': '2025.3.2'}
      ]
    }
  ]
};

var res = vdf::check_and_report(vuln_data:vuln_data, severity:SECURITY_WARNING);
vdf::handle_check_and_report_errors(vdf_result:res);