CVE-2026-110721
Received Received - Intake

Missing Authorization in NotificationX Plugin for WordPress

Publication date: 2026-10-16

Last updated on: 2026-10-16

Assigner: Wordfence

Description
The NotificationX plugin for WordPress is vulnerable to Missing Authorization leading to arbitrary content injection in versions up to, and including, 3.3.3 The /notificationx/v1/popup-submit REST route is registered with permission_callback => '__return_true', and the handler at PopupNotification::handle_popup_submission() accepts an attacker-controlled nx_id, loads whichever NotificationX campaign that id points to, and copies that campaign's own source into the new entry without verifying that the campaign is a Popup Notification or Exit Intent Popup (the two sources this form is intended to serve). This makes it possible for unauthenticated attackers to inject forged social-proof entries (name, title, message, email, theme) into any enabled non-popup NotificationX campaign — WP Comments, WooCommerce/EDD/Give sales, reviews, etc.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-10-16
Last Modified
2026-10-16
Generated
2026-10-16
AI Q&A
2026-10-16
EPSS Evaluated
N/A
NVD
CVE-2026-110721
EUVD
EUVD-2026-102642

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
wpdevteam NotificationX – FOMO, Live Sales Notification, WooCommerce Sales Popup, GDPR, Social Proof, Announcement Banner & Floating Notification Bar 0

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability in the NotificationX WordPress plugin allows unauthenticated attackers to inject fake social-proof notifications into any enabled campaign. The plugin fails to properly restrict access to a REST API endpoint, letting attackers forge entries like comments, sales notifications, or reviews by manipulating campaign IDs.

Detection Guidance

Check WordPress sites for the NotificationX plugin version 3.3.3 or lower. Inspect REST API logs for unauthorized POST requests to /notificationx/v1/popup-submit. Look for unexpected content injections in campaigns not configured as Popup or Exit Intent Popups.

Impact Analysis

If you use the NotificationX plugin, attackers could inject misleading or malicious content into your website's notifications. This could damage your site's credibility, mislead users, or even spread false information about products or services.

Mitigation Strategies

Update the NotificationX plugin to the latest version. Disable the plugin if updates are unavailable. Review and remove unauthorized content from campaigns. Monitor for suspicious activity in REST API logs.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-110721. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart