# CVE-2026-103343: WP ManageNinja FluentForm stored cross-site scripting

Source: https://junglewise.ai/threats/cve-2026-103343-improper-neutralization-of-input-during-web-page-generation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-01. Updated: 2026-10-05  
License: CC BY 4.0 with a link back

CVE-2026-103343 · Severity: medium · CVSS 6.5 · Published 2026-10-01

FluentForm is a WordPress plugin that allows users to create and manage forms on their websites. A stored cross-site scripting (XSS) vulnerability in versions up to 6.2.14 allows an attacker with contributor or developer privileges to inject malicious scripts into the site. When executed, these scripts can steal visitor data, hijack user accounts, or compromise site integrity.

Technologies: [WP ManageNinja LLC FluentForm](https://junglewise.ai/threats/technologies/fluentform). Vendors: [WP ManageNinja LLC](https://junglewise.ai/threats/vendors/wp-manageninja-llc).

## Quick answers

**Is CVE-2026-103343 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-103343 being exploited in the wild.

**How severe is CVE-2026-103343?** Medium severity, with a CVSS score of 6.5, published 1 October 2026.

**Which products and versions are affected?** WP ManageNinja LLC FluentForm through 6.2.14.

**Is there a fix for CVE-2026-103343?** Yes: fixed in 6.2.15. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-103343 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-103343?** Check whether you run WP ManageNinja LLC FluentForm 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.

## How to fix

- Fixed in 6.2.15

## Technical details

The vulnerability is an improper neutralization of input during web page generation, allowing stored XSS injection. It affects FluentForm through version 6.2.14 and requires either contributor or developer role privileges to exploit. An attacker with these roles can inject malicious scripts that persist in the database and execute in the browsers of site visitors, enabling data theft or account hijacking.

## Affected products

- WP ManageNinja LLC FluentForm through 6.2.14

## Timeline

- 2026-10-01: disclosed
- 2026-10-01: advisory

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/wordpress/plugin/fluentform/vulnerability/wordpress-fluentform-plugin-6-2-14-cross-site-scripting-xss-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/fluentform/vulnerability/wordpress-fluentform-plugin-6-2-14-cross-site-scripting-xss-vulnerability?_s_id=cve)

## Related threats

- [FluentForm missing authorization in access control](https://junglewise.ai/threats/cve-2026-120858-missing-authorization-vulnerability-in-wp-manageninja-llc)
- [WP ManageNinja FluentForm broken access control in form handling](https://junglewise.ai/threats/cve-2026-111831-missing-authorization-vulnerability-in-wp-manageninja-llc)
- [WP ManageNinja FluentForm broken access control in form handling](https://junglewise.ai/threats/cve-2026-103353-incorrect-behavior-order-vulnerability-in-wp-manageninja-llc)