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SmarterMail < 100.0.9526 XSS (CVE-2026-26930)

🗓️ 18 Feb 2026 00:00:00Reported by TenableType 
nessus
 nessus
🔗 www.tenable.com👁 3 Views

SmarterMail versions before 100.0.9526 are vulnerable to cross site scripting via the Messaging API (CVE 2026 26930).

Related
Refs
Code
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-26930
16 Feb 202616:27
attackerkb
BDU FSTEC
The vulnerability of the SmarterTools SmarterMail mail server lies in the lack of protective measures for the website structure, allowing attackers to carry out cross-site scripting attacks.
25 Feb 202600:00
bdu_fstec
CNNVD
SmarterTools SmarterMail 安全漏洞
16 Feb 202600:00
cnnvd
CVE
CVE-2026-26930
16 Feb 202616:27
cve
Cvelist
CVE-2026-26930
16 Feb 202616:27
cvelist
NVD
CVE-2026-26930
16 Feb 202617:18
nvd
Packet Storm
📄 SmarterMail 9518 Cross Site Scripting
17 Feb 202600:00
packetstorm
Positive Technologies
PT-2026-8360
16 Feb 202600:00
ptsecurity
RedhatCVE
CVE-2026-26930
17 Feb 202619:24
redhatcve
Vulnrichment
CVE-2026-26930
16 Feb 202616:27
vulnrichment
Rows per page
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(299390);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/02/19");

  script_cve_id("CVE-2026-26930");

  script_name(english:"SmarterMail < 100.0.9526 XSS (CVE-2026-26930)");

  script_set_attribute(attribute:"synopsis", value:
"The remote mail server is affected by a cross-site scripting vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of SmarterTools SmarterMail installed on the remote host is prior to 100.0.9526. It is,
therefore, affected by a cross-site scripting vulnerability:

  - SmarterTools SmarterMail before build 9526 allows XSS via MAPI requests. (CVE-2026-26930)

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.smartertools.com/smartermail/release-notes#9526");
  script_set_attribute(attribute:"see_also", value:"https://www.smartertools.com/smartermail/release-notes/current");
  script_set_attribute(attribute:"solution", value:
"Upgrade to SmarterTools SmarterMail version 100.0.9526 or later.");
  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:N/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-2026-26930");

  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:"2026/02/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/01/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/02/18");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:smartertools:smartermail");
  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("smartertools_smartermail_detect.nbin");
  script_require_keys("installed_sw/SmarterTools SmarterMail");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'checks': [
    {
      'product': {'name': 'SmarterTools SmarterMail', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [{'fixed_version': '100.0.9526'}]
    }
  ]
};

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);

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19 Feb 2026 00:00Current
5.1Medium risk
Vulners AI Score5.1
CVSS 3.17.2
EPSS0.00295
SSVC
3