🔐 CVE Alert

CVE-2026-3339

LOW 2.7

Keep Backup Daily <= 2.1.1 - Authenticated (Admin+) Limited Path Traversal via 'kbd_path' Parameter

CVSS Score
2.7
EPSS Score
0.0%
EPSS Percentile
0th

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.

CWE CWE-22
Vendor fahadmahmood
Product keep backup daily
Published Mar 20, 2026
Last Updated Apr 8, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability

Affected Versions

fahadmahmood / Keep Backup Daily
0 ≤ 2.1.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/01984754-e332-4500-99a2-10a7b79967f5?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/keep-backup-daily/tags/2.1.1/inc/functions.php#L855 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/keep-backup-daily/trunk/inc/functions.php#L855 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/keep-backup-daily/tags/2.1.1/inc/functions.php#L871 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3481587%40keep-backup-daily&new=3481587%40keep-backup-daily&sfp_email=&sfph_mail=

Credits

san6051