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Description

The Fluent Forms Pro plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `fluentform_step_form_save_data` AJAX action in all versions up to, and including, 6.1.17. This is due to the draft form submission endpoint being publicly accessible without authentication or nonce verification, combined with insufficient input sanitization and output escaping of form field data. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever an administrator views a partial form entry.

PUBLISHED Reserved 2026-02-11 | Published 2026-03-05 | Updated 2026-03-05 | Assigner Wordfence




HIGH: 7.2CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Problem types

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

Product status

Default status
unaffected

* (semver)
affected

Timeline

2026-02-11:Vendor Notified
2026-03-04:Disclosed

Credits

Prickly Cactus finder

References

www.wordfence.com/...-a236-4df3-b997-3631412a1b55?source=cve

plugins.trac.wordpress.org/...odules/Form/FormDataParser.php

fluentforms.com/docs/changelog/

cve.org (CVE-2026-2365)

nvd.nist.gov (CVE-2026-2365)

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