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.

Affected Version(s)

Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin 0 <= 2.11.1

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/ultimate-membe...
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

  • Vulnerability Reserved

Credit

Dmitrii Ignatyev
.