CVE-2025-26977

Filebird <= 6.4.2.1 - Authenticated (Author+) Insecure Direct Object Reference

2025-02-23 00:00
Revan Arifio

Strategic Overview

Status
Patched in 6.4.6
Affected Plugin
FileBird – WordPress Media Library Folders & File Manager
Affected Version
<= 6.4.2.1
CVSS
4.3Medium
Weakness type
CWE-639 · Authorization Bypass Through User-Controlled Key
CVE
CVE-2025-26977
View all FileBird – WordPress Media Library Folders & File Manager vulnerabilities

At a glance

CVE-2025-26977 is a medium-severity Authorization Bypass Through User-Controlled Key vulnerability in the FileBird WordPress plugin, affecting versions <= 6.4.2.1. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Author level or above. The issue is fixed in version 6.4.6; sites on affected versions should update now. Disclosed February 2025, reported by Revan Arifio.

Vulnerability Overview

The FileBird – WordPress Media Library Folders & File Manager plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 6.4.2.1 due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Author-level access and above, to perform an unauthorized action

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.

CWE-639: Authorization Bypass Through User-Controlled Key

Reaching this weakness in FileBird <= 6.4.2.1 takes an account at Author level or above. Authorization bypass through a user-controlled key, often called insecure direct object reference, means the application looks up a record by an identifier from the request without checking that the caller owns it.

Changing a number in the request is enough to read or modify other users' records, which on commerce and membership sites means customer data. For FileBird the fix is 6.4.6: builds <= 6.4.2.1 are affected, anything from 6.4.6 onward is not.

Remediation

Update to version 6.4.6, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: FileBird 6.4.6 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2025-26977https://www.wordfence.com/threat-intel/vulnerabilities/id/b42178a9-2f73-48d2-a912-50efe0bec76ehttps://nvd.nist.gov/vuln/detail/CVE-2025-26977

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C