NGSurvey Enterprise 3.6.4 incorrect authorization exposes other users’ API keys and personal data
Summary
| CVE | CVE-2025-15479 |
|---|---|
| State | PUBLISHED |
| Assigner | TCS-CERT |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-01-07 14:15:53 UTC |
| Updated | 2026-10-07 09:10:00 UTC |
| Description | 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. |
Risk And Classification
Primary CVSS: v4.0 5.1 MEDIUM from 64c5ae8f-7972-4697-86a0-7ada793ac795
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS: 0.002010000 probability, percentile 0.089640000 (date 2026-10-04)
Problem Types: CWE-79 | NGSurvey Enterprise 3.6.4 stored XSS via survey content enables arbitrary JavaScript execution | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | 64c5ae8f-7972-4697-86a0-7ada793ac795 | Secondary | 5.1 | MEDIUM | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/C... |
| 4.0 | CNA | CVSS | 5.1 | MEDIUM | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N |
| 3.1 | [email protected] | Primary | 5.4 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
CVSS v4.0 Breakdown
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS v3.1 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD Known Affected Configurations (CPE 2.3)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Data Illusion Zumbrunn | NGSurvey | affected 3.6.4 3.6.17 semver | Windows, Linux |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| docs.ngsurvey.com/installation-setup/change-log | 64c5ae8f-7972-4697-86a0-7ada793ac795 | docs.ngsurvey.com | Release Notes |
| cds.thalesgroup.com/en/tcs-cert/CVE-2025-15479 | 64c5ae8f-7972-4697-86a0-7ada793ac795 | cds.thalesgroup.com | Third Party Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Thomas Clair (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2025-05-12T23:41:00.000Z | Vulnerability discovered by the pentester |
| CNA | 2025-05-22T07:42:00.000Z | Report submitted to TCS-CERT |
| CNA | 2025-05-27T07:45:00.000Z | Vulnerability Report to Vendor through email ([email protected]) |
| CNA | 2025-05-17T07:46:00.000Z | Vendor acknowledged the report and confirmed fixes in v3.6.17 |
| CNA | 2026-01-07T13:12:00.000Z | CVE ID assigned |
| CNA | 2026-01-07T15:12:00.000Z | Vulnerability Disclosure |