What’s Vulnerable › Vulnerabilities
CVE-2026-18216: Backup Migration < 2.1.7 - Admin+ Privilege Escalation via Post-Restore Auto-Login
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-15 · updated 2026-08-26
- Weakness: CWE-287
Description
The Backup Migration WordPress plugin before 2.1.7 does not properly restrict a post-restore automatic login mechanism, allowing a user who administers one site of a multisite network to obtain a long-lived authenticated session as an administrator of another site in the same network, without credentials and bypassing two-factor authentication.
Affected products
- inisev BackupBliss – Backup & Migration with Free Cloud Storage: before 2.1.7 — fixed in 2.1.7
How to fix
Upgrade to a fixed version: inisev BackupBliss – Backup & Migration with Free Cloud Storage 2.1.7. Check the vendor advisory for mitigations.
References
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