What’s Vulnerable › Vulnerabilities

CVE-2026-15303: 6Storage Rentals <= 2.27.0 - Unauthenticated Account Takeover via 'email' Parameter

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-15 · updated 2026-08-20
• Weakness: CWE-287

Description

The 6Storage Rentals plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 2.27.0. This is due to the six_storage_create_wp_user() AJAX handler being registered on wp_ajax_nopriv_six_storage_create_wp_user without any nonce, capability, credential, or ownership verification, while calling wp_set_current_user() and wp_set_auth_cookie() for any WordPress user resolved by the attacker-supplied email address. This makes it possible for unauthenticated attackers to log in as any existing WordPress user, including administrators, by submitting that user's email address.

Affected products

• sixstorage 6Storage Rentals: through 2.27.0

References

• https://plugins.trac.wordpress.org/browser/6storage-rentals/tags/2.27.0/inc/Base/Six_Storage_DashboardController.php#L14
• https://plugins.trac.wordpress.org/browser/6storage-rentals/tags/2.27.0/inc/Base/Six_Storage_DashboardController.php#L3834
• https://plugins.trac.wordpress.org/browser/6storage-rentals/tags/2.27.0/inc/Base/Six_Storage_DashboardController.php#L3905
• https://www.wordfence.com/threat-intel/vulnerabilities/id/94e987be-bdfc-4691-b250-2b7d7249df0a?source=cve

Get alerted when CVE-2026-15303 or the next vulnerability affects your stack