BackWPup limited roles can exfiltrate database backups
BackWPup before 5.7.5 does not properly restrict several REST API routes used to manage jobs, backup destinations, and backup execution. A user holding a limited BackWPup role assigned by an administrator can create and run a backup job, direct the resulting full database backup to an attacker-controlled destination, and exfiltrate site data. The authoritative export does not name the individual routes, parameters, or permission callbacks.
- Component
- BackWPup
- Plugin slug
backwpup- Affected
- 5.2.2 to < 5.7.5
- Safe version
5.7.5- Published
- Sep 11, 2026
- Weakness
- CWE-862 — Missing Authorization
This CVE was published Sep 11, 2026 and is one of 12 known issues for this plugin.
Update, patch or deactivate.
Update BackWPup to 5.7.5 or later. The authoritative export marks versions below 5.7.5 affected. The application-level fix must enforce an appropriate WordPress capability on every job, destination, and execution route and must not rely only on the plugin's limited role.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The BackWPup WordPress plugin before 5.7.5 does not properly restrict access to several of its REST API routes for job, backup-destination, and backup-execution management, allowing users holding a BackWPup WordPress plugin before 5.7.5-defined, administrator-assigned limited role to create and run backup jobs and exfiltrate a full database backup to an attacker-controlled destination.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N