Authentication Bypass Vulnerability in 6Storage Rentals Plugin for WordPress
CVE-2026-15303

9.8CRITICAL

Key Information:

Vendor

WordPress
Status
6storage Rentals
Vendor
CVE Published:
15 August 2026

What is CVE-2026-15303?

The 6Storage Rentals plugin for WordPress suffers from a significant security flaw that allows for an authentication bypass. This vulnerability arises from the six_storage_create_wp_user() AJAX handler being improperly configured without essential nonce, capability, and ownership checks. As a result, unauthenticated attackers can exploit this weakness to log in as any existing WordPress user by providing that user's email address. This includes the potential to impersonate administrators, posing a severe threat to user data and site integrity.

Affected Version(s)

6Storage Rentals 0 <= 2.27.0

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/6storage-renta...
https://plugins.trac.wordpress.org/browser/6storage-renta...

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Afan
moonge
.