What’s Vulnerable › Vulnerabilities

CVE-2025-15479: NGSurvey Enterprise 3.6.4 incorrect authorization exposes other users’ API keys and personal data

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-07 · updated 2026-10-07
• Weakness: CWE-79

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.

Affected products

• Data Illusion Zumbrunn NGSurvey: before 3.6.17 — fixed in 3.6.17

How to fix

Upgrade to a fixed version: Data Illusion Zumbrunn NGSurvey 3.6.17. Check the vendor advisory for mitigations.

References

• https://cds.thalesgroup.com/en/tcs-cert/CVE-2025-15479
• https://docs.ngsurvey.com/installation-setup/change-log#id-3.6.17-2025-05-28

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