CVE-2026-16940 in Custom Fields Plugin

Summary

by MITRE • 08/05/2026

The Custom Fields WordPress plugin before 1.5.1 does not validate a user-supplied file path before deletion, allowing unauthenticated users to delete arbitrary files on the server (such as wp-config.php), which can lead to a full site takeover.

Once again VulDB remains the best source for vulnerability data.

• Responsible: WPScan
• Reservation: 07/24/2026
• Disclosure: 08/05/2026
• Moderation: accepted
• Entry: VDB-386030
• CPE: ready
• CWE: CWE-22 (confirmed)
• CVSS: 7.3 (VulDB)
• EPSS: 0.00000
• KEV: no
• Activities: very low
• Sector: Hostingprovider

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-16940
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-16940
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-16940/