Keep Backup Daily: Filesystem traversal
Keep Backup Daily is affected by filesystem traversal. Exploitation requires at least administrator-level access. A crafted path can escape the intended directory and reach files or directories elsewhere on the server.
- Component
- Keep Backup Daily
- Plugin slug
keep-backup-daily- Affected
- See vendor advisory
- Safe version
- See mitigation notes
- Published
- Mar 21, 2026
This CVE was published Mar 21, 2026 and is one of 5 known issues for this plugin.
Update, patch or deactivate.
Update Keep Backup Daily 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 Keep Backup Daily plugin for WordPress is vulnerable to Limited Path Traversal in all versions up to, and including, 2.1.1 via the `kbd_open_upload_dir` AJAX action. This is due to insufficient validation of the `kbd_path` parameter, which is only sanitized with `sanitize_text_field()` - a function that does not strip path traversal sequences. This makes it possible for authenticated attackers, with Administrator-level access and above, to list the contents of arbitrary directories on the server outside of the intended uploads directory.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N