CVE-2026-87759: CWE-269 Improper Privilege Management in Add User Autocomplete
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.
AI Analysis
Technical Summary
CVE-2026-87759 describes a privilege escalation vulnerability in the Add User Autocomplete WordPress plugin prior to version 1.2. The plugin fails to verify user capabilities or validate nonces when creating pending invitations for site membership. As a result, an authenticated user can supply an arbitrary role parameter, including administrator, effectively granting themselves elevated privileges on a multisite WordPress setup.
Potential Impact
An attacker with any authenticated user account can escalate their privileges to administrator on a multisite WordPress installation by exploiting this vulnerability. This can lead to full site compromise, including control over all sites in the multisite network.
Mitigation Recommendations
No official patch or fix information is provided. Users should upgrade to version 1.2 or later once available, or apply vendor-provided fixes if released. Until then, restrict authenticated user roles and monitor for suspicious privilege escalations. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
CVE-2026-87759: CWE-269 Improper Privilege Management in Add User Autocomplete
Description
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.
CVSS v3.1
Score 8.8high
Affected software
Add User Autocomplete
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-87759 describes a privilege escalation vulnerability in the Add User Autocomplete WordPress plugin prior to version 1.2. The plugin fails to verify user capabilities or validate nonces when creating pending invitations for site membership. As a result, an authenticated user can supply an arbitrary role parameter, including administrator, effectively granting themselves elevated privileges on a multisite WordPress setup.
Potential Impact
An attacker with any authenticated user account can escalate their privileges to administrator on a multisite WordPress installation by exploiting this vulnerability. This can lead to full site compromise, including control over all sites in the multisite network.
Mitigation Recommendations
No official patch or fix information is provided. Users should upgrade to version 1.2 or later once available, or apply vendor-provided fixes if released. Until then, restrict authenticated user roles and monitor for suspicious privilege escalations. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-09-09T07:22:37.737Z
- State
- PUBLISHED
Threat ID: 6aa4ee6355bf5e2cf5f21ff6
Added to database: 09/12/2026, 06:17:07 UTC
Last enriched: 09/12/2026, 06:32:47 UTC
Last updated: 09/13/2026, 03:01:23 UTC
Views: 45
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.