CVE-2026-19454
The JetBackup WordPress plugin before 3.1.23.5 does not perform its multisite authorisation check before serving backup archives and job logs, allowing an administrator of the network's main site who is not a Super Admin to download a full backup of the entire network, including every site's data and the shared webroot.
- Published Aug 27, 2026
- CVSS 4.4 medium
- 0.2% chance of exploitation in the next 30 days (EPSS)
- A fix is available