WP Security CheckVulnerability data as of October 23, 2026

Vulnerability alerts / October 22, 2026

Vulnerability in NotificationX – FOMO, Live Sales Notification, WooCommerce Sales Popup, GDPR, Social Proof, Announcement Banner & Floating Notification Bar — CVE-2022-51021

HighSeverity
CVSS 8.8
—Estimated exploit probability
EPSS
30,000+ sitesInstalls
2.3.12Fixed in

What to do now

Update NotificationX – FOMO, Live Sales Notification, WooCommerce Sales Popup, GDPR, Social Proof, Announcement Banner & Floating Notification Bar to 2.3.12 or later.

Affected versions

  • 2.0.0 up to (but not including) 2.3.12

Affected: NotificationX – FOMO, Live Sales Notification, WooCommerce Sales Popup, GDPR, Social Proof, Announcement Banner & Floating Notification Bar (plugin, notificationx)

Check: The plugin on wordpress.org / Our record for NotificationX – FOMO, Live Sales Notification, WooCommerce Sales Popup, GDPR, Social Proof, Announcement Banner & Floating Notification Bar

What the vulnerability is

NotificationX plugin for WordPress 2.0.0 before 2.3.12 contains an unauthenticated SQL injection vulnerability that allows remote attackers to manipulate database queries by supplying an array-form 'id' parameter to /wp-json/notificationx/v1/notification/{id}. Attackers can pass id[1] with crafted SQL, such as time-based SLEEP payloads, along with an api_key derived from md5(home_url()), which flows unsanitized into Database::get_where_query to extract database contents. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-18.

This description is reproduced verbatim from the public vulnerability record.

Sources

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