CVE-2026-19454

JetBackup 3.1.18.8 - 3.1.23.3 - Admin+ Multisite Network Backup Download

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.

Affected

JetBackup

CVSS v3.1 CNA

4.4 MEDIUMCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N

EPSS

0.25% chance of exploitation in the next 30 days, 15th percentile

Published

2026-08-27

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/1f5480c1-260a-40ce-9938-112746f9e8e8/

References

• CVE Record
• NVD entry