CVE-2026-19454: CWE-863 Incorrect Authorization in JetBackup
Description
JetBackup WordPress plugin versions before 3.1.23.5 have an authorization flaw that allows a network main site administrator, who is not a Super Admin, to download full backups of the entire multisite network including all sites' data and the shared webroot. This vulnerability arises from missing multisite authorization checks before serving backup archives and job logs.
CVSS v3.1
Score 4.4medium
Affected software
JetBackup
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-19454 is an incorrect authorization vulnerability (CWE-863) in the JetBackup WordPress plugin prior to version 3.1.23.5. The plugin fails to enforce proper multisite authorization checks before providing access to backup archives and job logs. As a result, a network main site administrator without Super Admin privileges can access and download full backups of the entire multisite network, exposing all sites' data and the shared webroot.
Potential Impact
An attacker with network main site administrator privileges but without Super Admin rights can obtain full backups of the entire multisite WordPress network. This leads to exposure of sensitive data from all sites within the network and the shared webroot, compromising confidentiality. There is no indication of impact on integrity or availability.
Mitigation Recommendations
No official patch or remediation guidance is currently available. Users should monitor the vendor's advisory for updates and apply the fix once released. Until then, restrict network main site administrator privileges to trusted users only to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-08-10T14:10:21.471Z
- State
- PUBLISHED
Threat ID: 6a8fd7baacd9273b49e174c5
Added to database: 08/27/2026, 06:22:50 UTC
Last enriched: 09/10/2026, 09:23:46 UTC
Last updated: 10/09/2026, 06:48:15 UTC
Views: 54
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