CVE-2025-15479

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.

CVSS 4.0

5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

CVSS 3.1

5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS

0.2% chance of exploitation in the next 30 days; higher than 9% of CVEs (scores of 2026-10-25)

CWE

CWE-79

Published

2026-01-07

Modified

2026-10-07

Record from

the NVD, synced 2026-10-19

Affected

• ngsurvey:ngsurvey

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

Check your stackJSON