PT-2026-26837 · Devsoftbaltic · Surveyjs: Drag & Drop Form Builder

Daniel Basta · Published 2026-03-21 · Updated 2026-03-21 · CVE-2026-2440

Mitre

CVSS v3.1

7.2

High

AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

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.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-2440

Affected Products

Surveyjs: Drag & Drop Form Builder

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-2440 · Security Note
• https://wordfence.com/threat-intel/vulnerabilities/id/08264ef7-940f-46b6-9880-34d730adad3c?source=cve · Note
• https://plugins.trac.wordpress.org/browser/surveyjs/tags/2.5.2/views/results.php#L116 · Note
• https://plugins.trac.wordpress.org/browser/surveyjs/tags/2.5.2/ajax_handlers/save_result.php#L15 · Note