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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 3
https://plugins.trac.wordpress.org/browser/surveyjs/tags/2.5.2/ajax_handlers/sa…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/surveyjs/tags/2.5.2/views/results.ph…
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/08264ef7-940f-46b6-98…
security@wordfence.com