CVE-2026-0722
Shield Security <= 21.0.8 - Cross-Site Request Forgery to SQL Injection
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-89 |
| Vendor | paultgoodchild |
| Product | shield: blocks bots, protects users, and prevents security breaches |
| Published | Feb 19, 2026 |
| Last Updated | Apr 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
paultgoodchild / Shield: Blocks Bots, Protects Users, and Prevents Security Breaches
0 ≤ 21.0.8
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/f53d9579-56e9-41aa-b6b7-2472734ee719?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/wp-simple-firewall/tags/21.0.8/src/lib/src/ActionRouter/CaptureAjaxAction.php#L42 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/wp-simple-firewall/tags/21.0.8/src/lib/src/ActionRouter/Actions/BaseAction.php#L125 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/wp-simple-firewall/tags/21.0.8/src/lib/src/Tables/DataTables/LoadData/Traffic/BuildTrafficTableData.php#L114 research.cleantalk.org: https://research.cleantalk.org/cve-2026-0722/ plugins.trac.wordpress.org: 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=
Credits
Dmitrii Ignatyev