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 'form_id' parameter in all versions up to, and including, 2.13.1 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. The injected payload is stored in the registering user's 'submitted' usermeta via update_user_meta() and is only triggered when an administrator opens the affected user record in the wp-admin Users modal, which inserts the unescaped output via jQuery .html().
Metrics
Affected Vendors & Products
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History
Thu, 22 Oct 2026 05:00:00 +0000
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Ultimatemember
Ultimatemember ultimate Member Wordpress-extensions Wordpress-extensions ultimate Member |
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Ultimatemember
Ultimatemember ultimate Member Wordpress-extensions Wordpress-extensions ultimate Member |
Sat, 03 Oct 2026 16:30:00 +0000
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ssvc
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Sat, 03 Oct 2026 02:45:00 +0000
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| 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 'form_id' parameter in all versions up to, and including, 2.13.1 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. The injected payload is stored in the registering user's 'submitted' usermeta via update_user_meta() and is only triggered when an administrator opens the affected user record in the wp-admin Users modal, which inserts the unescaped output via jQuery .html(). | |
| Title | Ultimate Member <= 2.13.1 - Unauthenticated Stored Cross-Site Scripting via 'form_id' Parameter | |
| Weaknesses | CWE-79 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: Wordfence
Published: 2026-10-03T02:25:34.564Z
Updated: 2026-10-03T15:42:47.558Z
Reserved: 2026-09-22T20:34:09.429Z
Link: CVE-2026-96270
Updated: 2026-10-03T15:39:51.857Z
Status : Deferred
Published: 2026-10-03T03:16:37.687
Modified: 2026-10-06T15:04:52.637
Link: CVE-2026-96270
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