---
id: CVE-2025-40904
title: >-
  A Stored HTML Injection vulnerability was discovered in the Smart Polling
  functionality due to improper validation of an input parameter
summary: >-
  A Stored HTML Injection vulnerability was discovered in the Smart Polling
  functionality due to improper validation of an input parameter. An
  authenticated user with limited privileges can push malicious remote
  strategies containing HTML …
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L'
cwe:
  - CWE-79
vendor: nozominetworks
product: cmc
affected:
  - cmc < 26.1.0
  - guardian < 26.1.0
patched:
  - cmc 26.1.0
  - guardian 26.1.0
published: '2026-05-19'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T13:10:00.187'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-40904'
references:
  - url: 'https://security.nozominetworks.com/NN-2026:7-01'
    label: prodsec@nozominetworks.com
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-827968.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
epss: 0.00186
epssPercentile: 0.07582
ingestedAt: '2026-10-14T13:30:58.502Z'
---

## Overview

A Stored HTML Injection vulnerability was discovered in the Smart Polling functionality due to improper validation of an input parameter. An authenticated user with limited privileges can push malicious remote strategies containing HTML tags through the sync. When a victim views the affected remote strategy in the Smart Polling functionality, the injected HTML renders in their browser, enabling phishing and possibly open redirect attacks. Full XSS exploitation and direct information disclosure are prevented by the existing input validation and Content Security Policy configuration.

## Affected

- `cmc < 26.1.0`
- `guardian < 26.1.0`

## Remediation

Upgrade past the affected range:

- `cmc 26.1.0`
- `guardian 26.1.0`