The Add User Autocomplete WordPress plugin before 1.2 does not perform any capability or nonce check before creating a pending site-membership… (CVE-2026-87759)
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 vulnerability in the Add User Autocomplete WordPress plugin prior to version 1.2. The plugin fails to verify user capabilities or validate nonces before processing site-membership invitations. As a result, any authenticated user can create a pending invitation with an arbitrary role, including administrator, effectively escalating their privileges on multisite WordPress environments.
Potential Impact
An attacker with any authenticated user account can escalate privileges to administrator on a multisite WordPress installation by exploiting this vulnerability. This compromises confidentiality, integrity, and availability of the affected sites, as indicated by the CVSS score of 8.8 with high impact on all security properties.
Mitigation Recommendations
No official patch or remediation details are provided in the input data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict authenticated user roles and monitor plugin usage carefully.
The Add User Autocomplete WordPress plugin before 1.2 does not perform any capability or nonce check before creating a pending site-membership… (CVE-2026-87759)
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
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-87759 describes a vulnerability in the Add User Autocomplete WordPress plugin prior to version 1.2. The plugin fails to verify user capabilities or validate nonces before processing site-membership invitations. As a result, any authenticated user can create a pending invitation with an arbitrary role, including administrator, effectively escalating their privileges on multisite WordPress environments.
Potential Impact
An attacker with any authenticated user account can escalate privileges to administrator on a multisite WordPress installation by exploiting this vulnerability. This compromises confidentiality, integrity, and availability of the affected sites, as indicated by the CVSS score of 8.8 with high impact on all security properties.
Mitigation Recommendations
No official patch or remediation details are provided in the input data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict authenticated user roles and monitor plugin usage carefully.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-2x96-8ghm-3875
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-87759"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aa5eff755bf5e2cf5ef6d9f
Added to database: 09/13/2026, 00:36:07 UTC
Last enriched: 09/13/2026, 00:37:40 UTC
Last updated: 09/13/2026, 04:01:23 UTC
Views: 5
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