High severity · published Oct 16, 2026
CVE-2026-109513
NotificationX <= 3.3.3 - Unauthenticated Stored Cross-Site Scripting via 'name' Parameter via popup-submit REST Route
7.2
CVSS
0.2%
EPSS
No
On KEV
Description
The NotificationX – FOMO, Live Sales Notification, WooCommerce Sales Popup, GDPR, Social Proof, Announcement Banner & Floating Notification Bar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'name' parameter in all versions up to, and including, 3.3.3 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 that an administrator has previously enabled a WordPress.org Reviews campaign and placed the notificationx-pro/notificationx dynamic block on a public page, both of which are documented, supported plugin workflows.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
Affected product
NF
NotificationX – FOMO, Live Sales Notification, WooCommerce Sales Popup, GDPR, Social Proof, Announcement Banner & Floating Notification Bar
wpdevteam
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-109513
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-109513
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/notificationx/tags/3.3.3/blocks/Blocks.php#L218
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/notificationx/tags/3.3.3/includes/Core/Rest/Popup.php#L55
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/notificationx/tags/3.3.3/includes/Extensions/PopupNotification/PopupNotification.php#L1119
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/notificationx/tags/3.3.3/includes/Extensions/WordPress/WPOrgReview.php#L295
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/notificationx/tags/3.3.3/includes/Features/ShortcodeInline.php#L148
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset?reponame=&new=3746251%40notificationx%2Ftags%2F3.3.4&old=3720837%40notificationx%2Ftags%2F3.3.3
More from NotificationX – FOMO, Live Sales Notification, WooCommerce Sales Popup, GDPR, Social Proof, Announcement Banner & Floating Notification Bar
5.3
CVE-2026-110721
NotificationX <= 3.3.3 - Missing Authorization to Unauthenticated Arbitrary Content Injection via 'nx_id' Parameter on /popup-submit REST Route