---
id: CVE-2026-33387
title: >-
  A template injection vulnerability was discovered in the Dashboards
  functionality due to improper validation of an input parameter
summary: >-
  A template injection vulnerability was discovered in the Dashboards
  functionality due to improper validation of an input parameter. An
  authenticated user with the required privileges can define a dashboard
  containing a malicious payload,…
severity: medium
cvss: 4.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L'
cwe:
  - CWE-1336
vendor: Nozomi Networks
product: Guardian
affected:
  - Guardian < 26.3.0
  - CMC < 26.3.0
published: '2026-09-08'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T02:19:21.037'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-33387'
references:
  - url: 'https://security.nozominetworks.com/NN-2026:16-01'
    label: prodsec@nozominetworks.com
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-911336.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00258
epssPercentile: 0.1733
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-08T14:18:53.457796Z'
ingestedAt: '2026-09-08T15:33:26.984Z'
---

## Overview

A template injection vulnerability was discovered in the Dashboards functionality due to improper validation of an input parameter. An authenticated user with the required privileges can define a dashboard containing a malicious payload, or a victim can be socially engineered into importing a malicious dashboard. When the victim views or imports the dashboard, the payload executes in their browser context, allowing the attacker to modify application data or disrupt application availability.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.