CVE-2026-16655

Summary

The Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Name Field Nested password Member in all versions up to, and including, 6.2.7 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected Software

Weaknesses

• CWE-79: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://www.wordfence.com/threat-intel/vulnerabilities/id/635e19ba-da98-459c-ab91-ff969b0812fd?source=cve
• https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.7/boot/globals.php#L110
• https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.7/app/Hooks/Ajax.php#L17
• https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.7/app/Modules/SubmissionHandler/SubmissionHandler.php#L20
• https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.7/app/Services/Form/SubmissionHandlerService.php#L123
• https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.7/app/Modules/Form/FormDataParser.php#L317
• https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.7/app/Services/Integrations/GlobalNotificationService.php#L59
• https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.6/boot/globals.php#L110
• https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.6/app/Hooks/Ajax.php#L17
• https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.6/app/Modules/SubmissionHandler/SubmissionHandler.php#L20
• https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.6/app/Services/Form/SubmissionHandlerService.php#L123
• https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.6/app/Modules/Form/FormDataParser.php#L317
• https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.6/app/Services/Integrations/GlobalNotificationService.php#L59
• https://plugins.trac.wordpress.org/changeset/3619584/fluentform/trunk/boot/globals.php
• https://plugins.trac.wordpress.org/changeset?old_path=%2Ffluentform/tags/6.2.7&new_path=%2Ffluentform/tags/6.2.8

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