Vulnerability Description
The SurveyJS plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 2.5.3 via survey result submissions. This is due to insufficient input sanitization and output escaping. The public survey page exposes the nonce required for submission, allowing unauthenticated attackers to submit HTML-encoded payloads that are decoded and rendered as executable HTML when an administrator views survey results, leading to stored XSS in the admin context.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/surveyjs/tags/2.5.2/ajax_handlers/sav
- https://plugins.trac.wordpress.org/browser/surveyjs/tags/2.5.2/views/results.php
- https://www.wordfence.com/threat-intel/vulnerabilities/id/08264ef7-940f-46b6-988
FAQ
What is CVE-2026-2440?
CVE-2026-2440 is a vulnerability with a CVSS score of 7.2 (HIGH). The SurveyJS plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 2.5.3 via survey result submissions. This is due to insufficient input sanitization...
How severe is CVE-2026-2440?
CVE-2026-2440 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-2440?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.