Path Traversal in Fahadmahmood Keep Backup Daily
CVE-2026-3339
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.
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.004 (30.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 2.7 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Fahadmahmood Keep Backup Daily — versions 0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-3339?
- CVE-2026-3339 is a low-severity vulnerability in Fahadmahmood Keep Backup Daily, classified under Path Traversal. CVSS score: 2.7/10. Published 2026-03-21.
- How severe is CVE-2026-3339?
- Low severity. CVSS v3 base score is 2.7 out of 10.