High · CVSS 8.8CVE-2026-87759

Add User Autocomplete < 1.2 - Subscriber+ Privilege EscalationCVE-2026-87759

Answer in brief

CVE-2026-87759 records a High severity (CVSS 8.8) vulnerability in Add User Autocomplete < 1.2 - Subscriber+ Privilege Escalation. The current sources do not mark it as known exploited. The current feed maps Unknown/Add User Autocomplete (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 12, 2026Updated Sep 14, 2026Source checked Oct 27, 2026First seen by HOL Sep 12, 2026Material review Sep 14, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 8.8
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Unknown/Add User Autocomplete (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Unknown/Add User Autocompletegeneric	>=0 <1.2	1.2

Recommended response

Check inventory. Check lockfiles and deployed manifests for Unknown/Add User Autocomplete.
Review the reported fix. Update Unknown/Add User Autocomplete to 1.2 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 12, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 14, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 12, 2026

Sources and claim methodology

Source referencewpscan.com

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.