s2Member <= 260127 - Unauthenticated Privilege Escalation via Account Takeover

Improper Privilege Management
CVE CVE-2026-1994
CVSS Critical (9.8)
Publicly Published February 18, 2026
Last Updated February 20, 2026
Researcher Alyudin Nafiie
Description

The s2Member plugin for WordPress is vulnerable to privilege escalation via account takeover in all versions up to, and including, 260127. This is due to the plugin not properly validating a user's identity prior to updating their password. This makes it possible for unauthenticated attackers to change arbitrary user's passwords, including administrators, and leverage that to gain access to their account.

References

1 affected software package

Software Type Plugin
Software Slug s2member (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 260127
Patched Version
  • 260215
This record contains material that is subject to copyright

Copyright 2012-2026 Defiant Inc.
License: Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy. License Detail.