What’s Vulnerable › Vulnerabilities

CVE-2026-1994: s2Member <= 260127 - Unauthenticated Privilege Escalation via Account Takeover

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-19 · updated 2026-06-17
• Weakness: CWE-269

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.

Affected products

• clavaque s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions: through 260127

References

• https://plugins.trac.wordpress.org/browser/s2member/tags/260127/src/includes/classes/registrations.inc.php#L74
• https://plugins.trac.wordpress.org/changeset/3461625/s2member#file5
• https://www.wordfence.com/threat-intel/vulnerabilities/id/6c31cf92-26b7-484d-8c93-ce241d655d07?source=cve

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