CVE-2026-8489
Ultimate Member <= 2.11.4 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Non-HTML Custom Textarea Profile Field
- State
- Published
- Severity
- 6.4 Medium
- Published
- Jul 3, 2026
- Updated
- Jul 6, 2026
- Reserved
- May 13, 2026
Description
The Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'about_me' parameter in all versions up to, and including, 2.11.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N | Wordfence |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Pluginultimatemember |
|
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/229a4e61-571c-44c6-9972-4dfc743afffe?source=cve
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.11.4/includes/core/um-filters-fields.php#L271
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.11.4/includes/core/class-profile.php#L479
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.11.4/includes/core/class-fields.php#L4577
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.11.4/includes/core/class-form.php#L854
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.11.4/includes/core/um-actions-form.php#L628
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.11.2/includes/core/um-filters-fields.php#L271
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.11.2/includes/core/class-profile.php#L479
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.11.2/includes/core/class-fields.php#L4577
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.11.2/includes/core/class-form.php#L854
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.11.2/includes/core/um-actions-form.php#L628
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