Roundcube Webmail 1.5.x < 1.5.13 / 1.6.x < 1.6.13 Multiple Vulnerabilities

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

include('compat.inc');

if (description)
{
  script_id(298770);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/30");

  script_cve_id("CVE-2026-26079", "CVE-2026-25916");
  script_xref(name:"IAVA", value:"2026-A-0159-S");

  script_name(english:"Roundcube Webmail 1.5.x < 1.5.13 / 1.6.x < 1.6.13 Multiple Vulnerabilities");

  script_set_attribute(attribute:"synopsis", value:
"An application running on the remote web server is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote web server is running Roundcube Webmail version 1.5.x prior to 1.5.13 or 1.6.x prior to 1.6.13. It is,
therefore, affected by multiple vulnerabilities:

  - A Cascading Style Sheets (CSS) injection vulnerability exists due to mishandling of comments. A remote attacker
    could exploit this to inject arbitrary CSS. (CVE-2026-26079)

  - A remote image blocking bypass exists because SVG feImage elements are not blocked when the 'Block remote images'
    setting is used. A remote attacker could exploit this to load remote images. (CVE-2026-25916)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://roundcube.net/news/2026/02/08/security-updates-1.6.13-and-1.5.13
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6b545fdc");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Roundcube Webmail version 1.5.13, 1.6.13 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/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:N/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-2026-26079");

  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:"2026/02/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/02/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/02/12");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:roundcube:webmail");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_set_attribute(attribute:"enable_cgi_scanning", value:"true");
  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("roundcube_webmail_detect.nbin");
  script_require_keys("installed_sw/Roundcube Webmail");
  script_require_ports("Services/www", 80, 443);

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'checks': [
    {
      'product': {'name': 'Roundcube Webmail', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'min_version': '1.5', 'fixed_version': '1.5.13'},
        {'min_version': '1.6', 'fixed_version': '1.6.13'}
      ]
    }
  ]
};

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