Quick answers
- Is CVE-2026-16655 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-16655 being exploited in the wild.
- How severe is CVE-2026-16655?
- High severity, with a CVSS score of 7.2, published 29 July 2026.
- Which products and versions are affected?
- WPManageNinja Fluent Forms up to, and including, 6.2.7.
- Is there a fix for CVE-2026-16655?
- A patch was published on 2026-07-29: Version 6.2.8 released to address the issue Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-16655 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-16655?
- Check whether you run WPManageNinja Fluent Forms at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The Fluent Forms plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) due to insufficient input sanitization and output escaping on the Name Field Nested 'password' member. An unauthenticated attacker can exploit this by submitting a specially crafted form entry containing malicious JavaScript. Because the input is stored without proper neutralization, the script will execute in the security context of any user (including administrators) who subsequently views the submission or the page where the data is displayed. This vulnerability is present in all versions up to and including 6.2.7 and has been addressed in version 6.2.8.
Affected products
- wpmanageninja Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder up to, and including, 6.2.7
Timeline
- 2026-07-29: disclosed: CVE published by Wordfence and NVD
- 2026-07-29: advisory
- 2026-07-29: patched: Version 6.2.8 released to address the issue
References
- https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.6/app/Hooks/Ajax.php
- https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.6/app/Modules/Form/FormDataParser.php
- https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.6/app/Modules/SubmissionHandler/SubmissionHandler.php
- https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.6/app/Services/Form/SubmissionHandlerService.php
- https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.6/app/Services/Integrations/GlobalNotificationService.php
- https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.6/boot/globals.php
- https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.7/app/Hooks/Ajax.php