Risk Letters

Exploited vulnerability

CVE-2022-51021

TLP:CLEAR

WPDeveloper notificationx Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

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.

Facts

  • Vendor: WPDeveloper
  • Product: NotificationX
  • EPSS (probability of exploitation within 30 days): 0.5 %
  • First known exploitation: 22 October 2026
  • First seen by Risk Letters: 22 October 2026

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD