CVE-2026-3339
Low · 2.7CVSS
2.7
EPSS
0.4%
Published
Mar 21, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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