Is CVE-2026-3339 actively exploited?

No active exploitation of CVE-2026-3339 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-3339 be exploited remotely?

Yes. CVE-2026-3339 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-3339?

CVE-2026-3339 has a CVSS score of 2.7 (LOW).

HOME VULNERABILITIESCVE-2026-3339

LOW

CVE-2026-3339

CWE-22Published: March 21, 2026· Updated: Mar 23, 2026

2.7

CVSS v3.1

EPSS:0.05%probability of exploitation in 30 daysPercentile:14.1th

Official 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.

NVD Source

Technical Analysis

CVE-2026-3339 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.