Reflected Cross-Site Scripting Vulnerability in Ultimate Member Plugin for WordPress
CVE-2026-1404

6.1MEDIUM

Key Information:

Vendor: WordPress
Status: Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin
Vendor: CVE Published:; 18 February 2026

What is CVE-2026-1404?

The Ultimate Member Plugin for WordPress is susceptible to reflected cross-site scripting (XSS) vulnerabilities owing to inadequate input sanitization and output escaping mechanisms. This vulnerability allows unauthenticated attackers to craft malicious web scripts that execute in the context of a user's session. By exploiting this flaw, attackers can potentially trick users into clicking on a malicious link, thereby injecting arbitrary scripts into the web pages visited. Affected users are urged to upgrade to address this critical security issue.

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Affected Version(s)

Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin * <= 2.11.1

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...

https://plugins.trac.wordpress.org/browser/ultimate-membe...

CVSS V3.1

Score:

6.1

Severity:

MEDIUM

Confidentiality:

Low

Integrity:

Low

Availability:

Low

Attack Vector:

Network

Attack Complexity:

Low

Privileges Required:

None

User Interaction:

Required

Scope:

Changed

Timeline

Vulnerability published
Feb 18, 2026
Vulnerability Reserved
Jan 24, 2026

Credit

Dmitrii Ignatyev

JSON

WordPress