6Storage Rentals: Authentication bypass and account takeover (CVE-2026-103883)
The 6Storage Rentals WordPress plugin contains an authentication bypass vulnerability that allows authenticated attackers with Subscriber-level access or higher to authenticate as any existing WordPress user, including administrators.
CVE search metadata
CVE search record: CVE-2026-103883. Severity: high. CVSS: 8.8. KEV: no. Product: 6Storage Rentals (<= 2.31.0). Brief: 6Storage Rentals: Authentication bypass and account takeover (CVE-2026-103883). Brief link: https://feed.craftedsignal.io/briefs/2026-11-01-cve-2026-103883/
Triage facts
Revision 1- Applicability
- 6Storage Rentals (<= 2.31.0)
- Evidence
- Unknown
- Severity
- High
- Sources
- 1 public source
- Freshness
- Revision 1Nov 11, 13:55 UTC
- Vulnerabilities
- 1 CVE
- Source quality
- A2Roughly even chance
The 6Storage Rentals plugin for WordPress (versions up to and including 2.31.0) is vulnerable to Authentication Bypass leading to Administrator Account Takeover. The six_storage_portal_registration() AJAX handler fails to perform capability checks or nonce verification when writing the six_storage_online_api_url POST parameter to site-wide options. Subsequently, the six_storage_create_wp_user() handler redeems a transient seeded from the attacker-controlled URL and calls wp_set_current_user() and wp_set_auth_cookie() without credential verification. This allows authenticated attackers with Subscriber-level access or higher to authenticate as any WordPress user.