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VulnerabilityPublished

CVE-2025-15479: Data Illusion Zumbrunn NGSurvey · Cross-site Scripting

Affects Data Illusion Zumbrunn NGSurveySource CVE Database V5

0

Not known to be exploited · CVSS 5.1 Medium : upgrade to 3.6.17 when convenient.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 4.0 base score
5.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 3.6.17
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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 7 Jan 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade Data Illusion Zumbrunn NGSurvey to 3.6.17.

Affected software

ProductAffectedFixed in
Data Illusion ZumbrunnNGSurveyAffected
  • >=3.6.4 <3.6.17
Fixed in
  • 3.6.17

AI-suggested

  1. Immediately restrict survey creation and editing privileges to the minimum number of trusted users to reduce the attack surface.
  2. Implement strict input validation and output encoding on all user-supplied survey content fields to neutralize malicious scripts.
  3. Monitor and audit survey content for suspicious or unexpected JavaScript code injections.
  4. Employ Content Security Policy (CSP) headers to limit the execution of unauthorized scripts in browsers accessing the survey platform.
  5. Use web application firewalls (WAFs) with rules targeting XSS payloads to detect and block exploitation attempts.
  6. If a patch becomes available from Data Illusion Zumbrunn, prioritize its deployment across all affected systems.
  7. Educate users to be cautious when interacting with survey content, especially if unexpected behavior is observed.
  8. Regularly review user roles and permissions to ensure least privilege principles are enforced.
  9. Consider isolating the NGSurvey platform in a segmented network zone to limit lateral movement if compromised.
  10. Enable multi-factor authentication (MFA) for all users to reduce the risk of credential compromise facilitating exploitation.

Description

CVE-2025-15479 is a stored cross-site scripting (XSS) vulnerability in NGSurvey Enterprise Edition 3.6.4 by Data Illusion Zumbrunn. It affects both Windows and Linux server deployments. Authenticated users with survey creation or editing privileges can inject malicious JavaScript into survey content, which is then executed in the browsers of other users viewing the survey. This can lead to session hijacking and unauthorized actions performed on behalf of victims. The vulnerability arises from improper output encoding of survey content. The CVSS 4.0 score is 5.1, indicating medium severity.

References

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