Description An improper access check allows privelege escalation through the com_users group editing webservice endpoint. Remediation References CVE-2026-48904 Related Vulnerabilities WordPress Plugin Keep Backup Daily Unspecified Vulnerability (2.0.3) WordPress Improper Input Validation Vulnerability (CVE-2018-1000773) WordPress Plugin Custom Add User Cross-Site Scripting (2.0.2) Squid Uncontrolled Resource Consumption Vulnerability (CVE-2021-46784) WordPress Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2019-16218) Severity Critical Classification CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Tags Missing Update Known Vulnerabilities CVE-2026-48904