Vulnerability · Published Aug 15, 2026 · Assigned by WPScan
CVE-2026-18216Backup Migration < 2.1.7 - Admin+ Privilege Escalation via Post-Restore Auto-Login
Medium 6.5
In plain English
A medium-severity improper authentication in Backup Migration from Unknown. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.5%top 56.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Unknown | Backup Migration | 0 – before 2.1.7 |
Weakness: CWE-287 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
References
- https://wpscan.com/vulnerability/f12530c5-4069-42c2-9f1c-b00fc62aa387/ exploit, vdb-entry, technical-description