---
id: CVE-2025-15479
title: >-
  Stored cross-site scripting (XSS, CWE-79) in the survey content and
  administration functionality in Data Illusion Zumbrunn NGSurvey Enterprise
  Edition 3.6.4 on all supported platforms (


  on Windows and Linux servers ) allows authenticate…
summary: >-
  Stored cross-site scripting (XSS, CWE-79) in the survey content and
  administration functionality in Data Illusion Zumbrunn NGSurvey Enterprise
  Edition 3.6.4 on all supported platforms (


  on Windows and Linux servers ) allows authenticate…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: ngsurvey
product: ngsurvey
affected:
  - ngsurvey < 3.6.17
patched:
  - ngsurvey 3.6.17
published: '2026-01-07'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T23:10:00.237'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-15479'
references:
  - url: 'https://cds.thalesgroup.com/en/tcs-cert/CVE-2025-15479'
    label: 64c5ae8f-7972-4697-86a0-7ada793ac795
  - url: >-
      https://docs.ngsurvey.com/installation-setup/change-log#id-3.6.17-2025-05-28
    label: 64c5ae8f-7972-4697-86a0-7ada793ac795
tags:
  - nvd
epss: 0.00196
epssPercentile: 0.08404
ingestedAt: '2026-09-30T22:27:27.732Z'
---

## Overview

Stored cross-site scripting (XSS, CWE-79) in the survey content and administration functionality in Data Illusion Zumbrunn NGSurvey Enterprise Edition 3.6.4 on all supported platforms (

on Windows and Linux servers ) allows authenticated remote users with survey creation or edit privileges to execute arbitrary JavaScript in other users’ browsers, steal session information and perform unauthorized actions on their behalf via crafted survey content that is rendered without proper output encoding.

## Affected

- `ngsurvey < 3.6.17`

## Remediation

Upgrade past the affected range:

- `ngsurvey 3.6.17`