BackWPup – WordPress Backup & Restore Plugin: A security weakness
BackWPup – WordPress Backup & Restore Plugin is affected by a security weakness. Exploitation requires at least subscriber-level access. The resulting impact depends on how the affected component exposes the vulnerable operation.
- Component
- BackWPup – WordPress Backup & Restore Plugin
- Plugin slug
backwpup-wordpress-backup-restore-plugin- Affected
- See vendor advisory
- Safe version
- See mitigation notes
- Published
- Oct 25, 2025
- Weakness
- CWE-862 — Missing Authorization
This CVE was published Oct 25, 2025 and is one of 1 known issue for this plugin.
Update, patch or deactivate.
Update BackWPup – WordPress Backup & Restore Plugin to a release outside the affected range, or disable and remove it until a fixed version is available.
No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.
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 Backup & Restore Plugin plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the 'backwpup_working' AJAX action in all versions up to, and including, 5.5.0. This makes it possible for authenticated attackers, with Subscriber-level access and above, to retrieve access to a back-up's filename while a backup is running. This information has little value on it's own, but could be used to aid in a brute force attack to retrieve back-up contents in limited environments (i.e. NGINX).
CVE / CNA vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N