CVE-2026-18146Fluent Forms <= 6.2.11 - Unauthenticated Stored Cross-Site Scripting via Notification Smartcode Values
Updated under an hour ago ()
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It affects wpmanageninja Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
The Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Notification Smartcode Values in all versions up to, and including, 6.2.11 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute in the browser of an administrator (or any user with the Fluent Forms entry-viewing capability) when they view the form's entry Submission Logs in the WordPress admin dashboard. Exploitation requires that a site administrator or Fluent Forms manager has configured an email notification whose subject or static (direct) Send To value references an attacker-influenced Smartcode such as an input_password field value, a cookie value, or submission.response.
- CVSS
- 7.2 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- Aug 13, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
wpmanageninja Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder wpmanageninja:fluent_forms_customizable_contact_forms_survey_quiz_and_conversational_form_builder (from the name) | through 6.2.11 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/643f92e2-b14e-4056-97fc-1c631027c54f?source=cve
- https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.8/app/Services/FormBuilder/Notifications/EmailNotification.php#L196
- https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.8/boot/globals.php#L98
- https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.8/app/Services/FormBuilder/ShortCodeParser.php#L145
- https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.8/app/Services/FormBuilder/ShortCodeParser.php#L142
- https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.8/assets/js/form_entries.js#L2
- https://plugins.trac.wordpress.org/changeset?reponame=&new=3640683%40fluentform%2Ftags%2F6.2.12&old=3632883%40fluentform%2Ftags%2F6.2.11
- https://plugins.trac.wordpress.org/changeset/3640683/fluentform/trunk/app/Services/FormBuilder/ShortCodeParser.php
- https://plugins.trac.wordpress.org/changeset?old_path=%2Ffluentform/tags/6.2.11&new_path=%2Ffluentform/tags/6.2.12
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.