CVE-2025-15479: Stored cross-site scripting (XSS, CWE-79) in the survey content and administration functionality in Data Illus

Q: How do I fix CVE-2025-15479?

ngsurvey: upgrade to 3.6.17. Exact commands for each OS are on this page.

Q: Is CVE-2025-15479 being exploited?

CVE-2025-15479 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-15479 affect?

CVE-2025-15479 affects ngsurvey. Severity is medium (CVSS 5.4). 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 r

Q: How urgent is CVE-2025-15479?

Priority 21/100. No elevated risk signals yet.

Routine

MEDIUM 5.4UPGRADE

CVE-2025-15479 is a medium-severity flaw (CVSS 5.4) affecting ngsurvey. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 conten

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.2% (top 90%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-01-07
Last modified	2026-10-07

Publisher (CNA): TCS-CERT · Vendor: ngsurvey

Last updated 2026-10-07 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-01-07 14:15 UTCPublished CVE record published
2026-10-07 09:10 UTCUpdated Record last modified

ngsurvey ngsurvey UPGRADE

Affected: < 3.6.17

Fixed in: 3.6.17

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy ngsurvey || rpm -q ngsurvey || ngsurvey --version

2. UPGRADE to 3.6.17 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ngsurvey

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ngsurvey

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-15479?

ngsurvey: upgrade to 3.6.17. Exact commands for each OS are on this page.

Is CVE-2025-15479 being exploited?

CVE-2025-15479 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-15479 affect?

CVE-2025-15479 affects ngsurvey. Severity is medium (CVSS 5.4). 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 r

How urgent is CVE-2025-15479?

Priority 21/100. No elevated risk signals yet.

Software pages

Windows vulnerabilities

References

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