High severity · published Oct 22, 2026
CVE-2022-51021
NotificationX WordPress Plugin < 2.3.12 Unauthenticated SQL Injection via notification REST endpoint
New
8.2
CVSS
0.5%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NO
NotificationX · WPDeveloper
2.0.0 before 2.3.12 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-51021
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-51021
github.com
https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/wordpress/notificationx-sqli.yaml
wordpress.org
https://wordpress.org/plugins/notificationx/
wpscan.com
https://wpscan.com/vulnerability/d1480717-726d-4be2-95cb-1007a3f010bb
www.vulncheck.com
https://www.vulncheck.com/advisories/notificationx-wordpress-plugin-2.3.12-unauthenticated-sql-injection-via-notification-rest-endpoint
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