Description An improper access check allows privelege escalation through the com_users group editing webservice endpoint. Remediation References CVE-2026-48904 Related Vulnerabilities XWiki Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') Vulnerability (CVE-2023-29526) Magento Improper Input Validation Vulnerability (CVE-2019-7898) Drupal Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2026-55808) WordPress 5.0.x Multiple Vulnerabilities (5.0 - 5.0.17) Oracle Database Server CVE-2008-2604 Vulnerability (CVE-2008-2604) Severity Critical Classification CVE-2026-48904 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Tags Missing Update Known Vulnerabilities