---
id: CVE-2026-96649
title: >-
  The Frontend Post Submission Manager Lite – Frontend Posting WordPress Plugin
  plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting
  via post_content Parameter (data-label DOM Sink) in all versions up to, and
  includi…
summary: >-
  The Frontend Post Submission Manager Lite – Frontend Posting WordPress Plugin
  plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting
  via post_content Parameter (data-label DOM Sink) in all versions up to, and
  includi…
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: wpshuffle
product: >-
  Frontend Post Submission Manager Lite – Guest Post and Frontend Submission
  Forms
affected:
  - >-
    frontend_post_submission_manager_lite_guest_post_and_frontend_submission_forms
    <= 1.3.4
published: '2026-09-30'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T03:17:00.387'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-96649'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/frontend-post-submission-manager-lite/tags/1.3.4/assets/js/fpsml-fileuploader.js#L578
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/frontend-post-submission-manager-lite/tags/1.3.4/assets/js/fpsml-fileuploader.js#L583
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/frontend-post-submission-manager-lite/tags/1.3.4/assets/js/fpsml-frontend.js#L40
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/frontend-post-submission-manager-lite/tags/1.3.4/includes/classes/class-fpsml-library.php#L112
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/frontend-post-submission-manager-lite/tags/1.3.4/includes/cores/ajax-process-form.php#L161
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/frontend-post-submission-manager-lite/tags/1.3.4/includes/cores/ajax-process-form.php#L5
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/frontend-post-submission-manager-lite/tags/1.3.5/
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/0af8ff06-68e2-4a0c-9de4-d06a6a2e86c9?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-30T02:55:35.389Z'
---

## Overview

The Frontend Post Submission Manager Lite – Frontend Posting WordPress Plugin plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via post_content Parameter (data-label DOM Sink) in all versions up to, and including, 1.3.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires the site operator to have enabled guest post submission via the [fpsm] shortcode, which registers a publicly accessible AJAX handler gated only by a nonce emitted on every page containing the shortcode.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.