SmarterMail < 100.0.9526 XSS (CVE-2026-26930)

high Nessus Plugin ID 299390

Synopsis

The remote mail server is affected by a cross-site scripting vulnerability.

Description

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.

Solution

Upgrade to SmarterTools SmarterMail version 100.0.9526 or later.

Plugin Details

Severity: High

ID: 299390

File Name: smartertools_smartermail_CVE-2026-26930.nasl

Version: 1.1

Type: remote

Family: CGI abuses

Published: 2/18/2026

Updated: 2/18/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.8

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2026-26930

CVSS v3

Risk Factor: High

Base Score: 7.2

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Vulnerability Information

CPE: cpe:/a:smartertools:smartermail

Required KB Items: installed_sw/SmarterTools SmarterMail

Patch Publication Date: 1/30/2026

Vulnerability Publication Date: 2/16/2026

Reference Information

CVE: CVE-2026-26930

Detections

Analytics