Limited Path Traversal in Keep Backup Daily Plugin for WordPress
CVE-2026-3339

2.7LOW

Key Information:

Vendor

WordPress
Status
Keep Backup Daily
Vendor
CVE Published:
20 March 2026

What is CVE-2026-3339?

The Keep Backup Daily plugin for WordPress contains a vulnerability that allows authenticated users with Administrator-level access to perform Limited Path Traversal. This occurs due to insufficient validation of the 'kbd_path' parameter in the kbd_open_upload_dir AJAX action. The sanitization method employed (sanitize_text_field()) fails to adequately filter out path traversal sequences, enabling attackers to access arbitrary directories on the server, potentially exposing sensitive information beyond the designated uploads directory.

Affected Version(s)

Keep Backup Daily 0 <= 2.1.1

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/keep-backup-da...
https://plugins.trac.wordpress.org/browser/keep-backup-da...

CVSS V3.1

Score:
2.7
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

san6051
.