WordPress security changelog
MEDIUM CVE-2025-12492 Deferred

Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin: Sensitive information exposure

Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin is affected by sensitive information exposure. The vulnerable path is reachable without authentication. Successful exploitation can disclose data that should not be available to the caller.

CVE / CNA score 5.3 CVSS 3.1 · security@wordfence.com
NVD score Pending NVD has not published its own CVSS assessment.
Component
Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin
Plugin slug
ultimate-member
Affected
See vendor advisory
Safe version
See mitigation notes
Published
Dec 20, 2025
Weakness
CWE-200 — Exposure of Sensitive Information to an Unauthorized Actor

This CVE was published Dec 20, 2025 and is one of 56 known issues for this plugin.

What to do

Update, patch or deactivate.

Update Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin to a release outside the affected range, or disable and remove it until a fixed version is available.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

The Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.11.0 via the ajax_get_members function. This is due to the use of a predictable low-entropy token (5 hex characters derived from md5 of post ID) to identify member directories and insufficient authorization checks on the unauthenticated AJAX endpoint. This makes it possible for unauthenticated attackers to extract sensitive data including usernames, display names, user roles (including administrator accounts), profile URLs, and user IDs by enumerating predictable directory_id values or brute-forcing the small 16^5 token space.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References

Primary and upstream sources