# CVE-2026-17571: wpmanageninja Fluent Forms reflected XSS via param parameter

Source: https://junglewise.ai/threats/cve-2026-17571-wpmanageninja-fluent-forms-reflected-xss-via-param-parameter  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-01. Updated: 2026-08-01  
License: CC BY 4.0 with a link back

CVE-2026-17571 · Severity: medium · CVSS 6.1 · Published 2026-08-01

Fluent Forms is a popular WordPress plugin used to create contact forms, surveys, and quizzes. A security flaw in this plugin allows attackers to inject malicious scripts into a user's browser if the user clicks a specially crafted link. This could lead to unauthorized actions being performed on behalf of the user or the theft of sensitive session information.

Technologies: [WPManageNinja Fluent Forms](https://junglewise.ai/threats/technologies/fluent-forms). Vendors: [WPManageNinja](https://junglewise.ai/threats/vendors/wpmanageninja).

## Quick answers

**Is CVE-2026-17571 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-17571 being exploited in the wild.

**How severe is CVE-2026-17571?** Medium severity, with a CVSS score of 6.1, published 1 August 2026.

**Which products and versions are affected?** WPManageNinja Fluent Forms up to, and including, 6.2.8.

**Is there a fix for CVE-2026-17571?** A patch was published on 2026-08-01: Fixed in version 6.2.9 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-17571 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-17571?** 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 Reflected Cross-Site Scripting (XSS) due to insufficient input sanitization and output escaping on the 'param' parameter within the Component.php module. An unauthenticated attacker can exploit this by crafting a malicious URL containing a script payload and tricking a victim into clicking it. When the victim visits the link, the script executes within the context of their browser session. This can be used to steal session cookies or perform actions as the authenticated user. The issue is fixed in version 6.2.9.

## Affected products

- wpmanageninja Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder up to, and including, 6.2.8

## Timeline

- 2026-08-01: disclosed
- 2026-08-01: advisory
- 2026-08-01: patched: Fixed in version 6.2.9

## References

- [https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.8/app/Modules/Component/Component.php](https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.8/app/Modules/Component/Component.php)
- [https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.8/app/Modules/Component/Component.php](https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.8/app/Modules/Component/Component.php)
- [https://plugins.trac.wordpress.org/changeset/3625751/fluentform/trunk/app/Modules/Component/Component.php](https://plugins.trac.wordpress.org/changeset/3625751/fluentform/trunk/app/Modules/Component/Component.php)
- [https://plugins.trac.wordpress.org/changeset?old_path=%2Ffluentform/tags/6.2.8&new_path=%2Ffluentform/tags/6.2.9](https://plugins.trac.wordpress.org/changeset?old_path=%2Ffluentform/tags/6.2.8&new_path=%2Ffluentform/tags/6.2.9)
- [https://www.wordfence.com/threat-intel/vulnerabilities/id/547008fe-2585-4089-a710-71a83ae3d829?source=cve](https://www.wordfence.com/threat-intel/vulnerabilities/id/547008fe-2585-4089-a710-71a83ae3d829?source=cve)

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