CVE-2026-87759
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk14th percentile - higher than 14% of all known CVEs
Summary
The Add User Autocomplete WordPress plugin before 1.2 does not perform any capability or nonce check before creating a pending site-membership invitation carrying a caller-supplied role, allowing any authenticated user, such as a subscriber, to grant themselves the administrator role on a multisite installation.
Risk Assessment
A low-privileged user can escalate privileges to administrator, leading to full site takeover on a multisite installation.
Recommendation
Update the Add User Autocomplete plugin to version 1.2 or later. Check for unauthorized invitations or accounts with elevated privileges.
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Original NVD description (English source)
The Add User Autocomplete WordPress plugin before 1.2 does not perform any capability or nonce check before creating a pending site-membership invitation carrying a caller-supplied role, allowing any authenticated user, such as a subscriber, to grant themselves the administrator role on a multisite installation.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

