JetBrains PyCharm < 2025.3.4 Stored XSS

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

include('compat.inc');

if (description)
{
  script_id(318672);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/09");

  script_cve_id("CVE-2026-49384");
  script_xref(name:"IAVA", value:"2026-A-0538");

  script_name(english:"JetBrains PyCharm < 2025.3.4 Stored 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 2025.3.4.
It is, therefore, affected by a stored cross-site scripting (XSS) vulnerability in Jupyter notebook Markdown cells.

In JetBrains PyCharm before 2025.3.4 stored XSS in Jupyter notebook Markdown cells was possible.

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 2025.3.4 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-2026-49384");

  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:"2026/05/29");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/05/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/04");

  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': '2025.3.4'}
      ]
    }
  ]
};

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