CVE-2026-87759 Add User Autocomplete WordPress plugin - Broken Access Control

Add User Autocomplete WordPress plugin < 1.2 contains a broken access control vulnerability caused by lack of capability and nonce checks in site-membership invitation creation, letting authenticated users escalate privileges to administrator on multisite installations, exploit requires authentication.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.42% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Privilege Escalation
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
12 September 2026
Updated
15 October 2026
Weakness
CWE-269

Vendor fix

Update to version 1.2 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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