Meta Box <= 5.11.1 - Authenticated (Contributor+) Arbitrary File Deletion

2026-04-13 00:00
Nguyen Ba Khanh

Strategic Overview

Status
Patched in 5.11.2
Affected PluginMeta Box
Affected Version<= 5.11.1
CVSS8.1High
CVECVE-2026-39468
View all Meta Box vulnerabilities

Vulnerability Overview

The Meta Box plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in all versions up to, and including, 5.11.1. This makes it possible for authenticated attackers, with Contributor-level access and above, to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php).

Technical Analysis

REMEDIATION: Update to version 5.11.2, or a newer patched version --- IDENTIFIER: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

External References

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