What’s Vulnerable › Vulnerabilities

CVE-2023-0993: Shield Security <= 17.0.17 - Missing Authorization

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-06-09 · updated 2026-06-17
• Weakness: CWE-862

Description

The Shield Security plugin for WordPress is vulnerable to Missing Authorization on the 'theme-plugin-file' AJAX action in versions up to, and including, 17.0.17. This allows authenticated attackers to add arbitrary audit log entries indicating that a theme or plugin has been edited, and is also a vector for Cross-Site Scripting via CVE-2023-0992.

Affected products

• paultgoodchild Shield: Blocks Bots, Protects Users, and Prevents Security Breaches: through 17.0.17

References

• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=2883864%40wp-simple-firewall%2Ftrunk&old=2883536%40wp-simple-firewall%2Ftrunk&sfp_email=&sfph_mail=
• https://wordpress.org/plugins/wp-simple-firewall/
• https://www.wordfence.com/blog/2023/04/multiple-vulnerabilities-patched-in-shield-security/
• https://www.wordfence.com/threat-intel/vulnerabilities/id/674461ad-9b61-48c4-af2a-5dfcaeb38215?source=cve
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=2883864%40wp-simple-firewall%2Ftrunk&old=2883536%40wp-simple-firewall%2Ftrunk&sfp_email=&sfph_mail=
• https://wordpress.org/plugins/wp-simple-firewall/
• https://www.wordfence.com/threat-intel/vulnerabilities/id/674461ad-9b61-48c4-af2a-5dfcaeb38215?source=cve

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