PT-2026-28639 · WordPress · Ultimate Member+1

Published 2026-03-27 · Updated 2026-03-28 · CVE-2026-4248

Positive Technologies (AI Summary)

CVSS v3.1

8.0

High

Base vector

AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Ultimate Member plugin for WordPress versions through 2.11.2

Description The Ultimate Member plugin for WordPress is susceptible to Sensitive Information Exposure. The issue stems from the '{usermeta:password reset link}' template tag being processed within post content through the '[um loggedin]' shortcode. This process generates a valid password reset token for the currently logged-in user. Authenticated attackers with Contributor-level access or higher can exploit this by creating a malicious pending post. When an Administrator previews this post, a password reset token for the Administrator is generated and sent to a server controlled by the attacker, potentially leading to full account takeover.

Recommendations Versions prior to 2.11.3 should be updated.

Fix

Improper Authorization

Weakness Enumeration

CWE-285

Related Identifiers

CVE-2026-4248

Affected Products

Ultimate Member

Wordpress

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2026-4248 · Security Note
• https://github.com/ultimatemember/ultimatemember/pull/1799 · Note
• https://twitter.com/CVEnew/status/2037719339642843273 · Twitter Post
• https://plugins.trac.wordpress.org/changeset/3492178/ultimate-member/trunk/includes/um-short-functions.php · Note
• https://twitter.com/TheHackerWire/status/2037676703246651868 · Twitter Post
• https://twitter.com/cyberbivash/status/2037723024955220233 · Twitter Post
• https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.11.2/includes/um-short-functions.php#L205 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/baafd001-144d-4ee4-b7e6-28c0931e6e10?source=cve · Note