Authorization Bypass in Fiber Admin Plugin for WordPress
CVE-2026-121492

Currently unrated

Key Information:

Vendor

WordPress
Status
Fiber Admin
Vendor
CVE Published:
7 November 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-121492?

The Fiber Admin plugin for WordPress prior to version 4.0.1 is susceptible to an authorization bypass vulnerability. This flaw allows unauthenticated users to manipulate the ordering of posts, including drafts and private content, as well as navigation menu items. Furthermore, if term ordering is enabled, attackers can also change the order of taxonomy terms, potentially leading to significant content mismanagement and organizational issues within the WordPress site. Website owners using this plugin are strongly encouraged to update to the latest version to mitigate this risk.

Affected Version(s)

Fiber Admin 0 < 4.0.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-121492 - Proof of Concept

References

https://wpscan.com/vulnerability/d6ee9d6f-ab77-4bf3-98f5-...
exploitvdb-entrytechnical-description

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Enrico Marcolini
Claudio Marchesini
Dottor Marc
WPScan
.