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.
MEDIUM
Vulnerability intelligence
CVE-2026-19454
CVSS 3.14.4
SeverityMedium
Known exploitedNo
Primary source: NIST National Vulnerability Database