What’s Vulnerable › Vulnerabilities

CVE-2024-2123: Ultimate Member <= 2.8.3 - Unauthenticated Stored Cross-Site Scripting

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 26.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-03-13 · updated 2026-06-17
• Weakness: CWE-79

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 several parameters in all versions up to, and including, 2.8.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

• ultimatemember Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership P: before 2.8.4 — fixed in 2.8.4

How to fix

Upgrade to a fixed version: ultimatemember Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership P 2.8.4. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/browser/ultimate-member/trunk/templates/members-grid.php#L44
• https://plugins.trac.wordpress.org/browser/ultimate-member/trunk/templates/members-grid.php#L53
• https://plugins.trac.wordpress.org/browser/ultimate-member/trunk/templates/members-grid.php#L65
• https://plugins.trac.wordpress.org/browser/ultimate-member/trunk/templates/members-list.php#L39
• https://plugins.trac.wordpress.org/browser/ultimate-member/trunk/templates/members-list.php#L53
• https://plugins.trac.wordpress.org/changeset/3046611/ultimate-member#file746
• https://www.wordfence.com/threat-intel/vulnerabilities/id/c8bc1653-8fee-468a-bb6d-f24959846ee5?source=cve
• https://plugins.trac.wordpress.org/browser/ultimate-member/trunk/templates/members-grid.php#L44
• https://plugins.trac.wordpress.org/browser/ultimate-member/trunk/templates/members-grid.php#L53
• https://plugins.trac.wordpress.org/browser/ultimate-member/trunk/templates/members-grid.php#L65
• https://plugins.trac.wordpress.org/browser/ultimate-member/trunk/templates/members-list.php#L39
• https://plugins.trac.wordpress.org/browser/ultimate-member/trunk/templates/members-list.php#L53

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