CVE-2026-19423
High
Description
The Ultimate Member WordPress plugin before 2.13.0 does not validate a submitted role selection when it cannot resolve the set of roles a profile form permits, and screens the value against the site's registered role names rather than against the form's own allow-list, allowing unauthenticated users who register through the Ultimate Member WordPress plugin before 2.13.0's own form to grant themselves arbitrary capabilities and reach administrator-equivalent access.
SeverityHigh
CVSS8.1
Exploit probability—
ProductUltimate Member
PublishedAug 28, 2026
First seenAug 28, 2026
Weakness typeCWE-269Improper privilege management
How to fix
Update
- Ultimate Member2.13.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Ultimate Member | 2.6.7 ≤ v < 2.13.0 | 2.13.0 |
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