Vulnerability · Published Feb 18, 2026 · Assigned by Wordfence
CVE-2026-1404Ultimate Member <= 2.11.1 - Reflected Cross-Site Scripting via Filter Parameters
Medium 6.1
In plain English
A medium-severity cross-site scripting in Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin from ultimatemember. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities).
Official description
The Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the filter parameters (e.g., 'filter_first_name') in all versions up to, and including, 2.11.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ultimatemember | Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin | 0 – through 2.11.1 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/ba62b804-f101-4e29-8304-fb2b7dad333c?source=cve
- https://plugins.trac.wordpress.org/browser/ultimate-member/trunk/templates/members.php#L348
- https://plugins.trac.wordpress.org/browser/ultimate-member/trunk/assets/js/um-members.js#L515
- https://plugins.trac.wordpress.org/changeset/3458086/