CVE-2026-87759 Add User Autocomplete < 1.2 - Subscriber+ Privilege Escalation
Authenticated users can escalate privileges to administrator on multisite installations due to missing capability checks in the Add User Autocomplete plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-87759?
CVE-2026-87759 is a high-severity vulnerability in Unknown Add User Autocomplete, published on 12 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-269
Which versions are affected by CVE-2026-87759?
How do I fix CVE-2026-87759?
No fix has been published for CVE-2026-87759 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-87759 being exploited?
There is no known exploitation of CVE-2026-87759 in the wild and no public exploit code.
Sources
Also known as GHSA-2x96-8ghm-3875.