Vulnerability · Published Feb 19, 2026 · Assigned by Wordfence
CVE-2026-0722Shield Security <= 21.0.8 - Cross-Site Request Forgery to SQL Injection
Medium 6.5
In plain English
A medium-severity SQL injection in Shield: Blocks Bots, Protects Users, and Prevents Security Breaches from paultgoodchild. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).
Official description
The Shield Security plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 21.0.8. This is due to the plugin allowing nonce verification to be bypassed via user-supplied parameter in the 'isNonceVerifyRequired' function. This makes it possible for unauthenticated attackers to execute SQL injection attacks, extracting sensitive information from the database, via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| paultgoodchild | Shield: Blocks Bots, Protects Users, and Prevents Security Breaches | 0 – through 21.0.8 |
Weakness: CWE-89 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/f53d9579-56e9-41aa-b6b7-2472734ee719?source=cve
- https://plugins.trac.wordpress.org/browser/wp-simple-firewall/tags/21.0.8/src/lib/src/ActionRouter/CaptureAjaxAction.php#L42
- https://plugins.trac.wordpress.org/browser/wp-simple-firewall/tags/21.0.8/src/lib/src/ActionRouter/Actions/BaseAction.php#L125
- https://plugins.trac.wordpress.org/browser/wp-simple-firewall/tags/21.0.8/src/lib/src/Tables/DataTables/LoadData/Traffic/BuildTrafficTableData.php#L114
- https://research.cleantalk.org/cve-2026-0722/
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3439494%40wp-simple-firewall&new=3439494%40wp-simple-firewall&sfp_email=&sfph_mail=