Rapid7’s 2026 Global Cybersecurity Summit is now available on-demand.Watch sessions.
Rapid7

vulnerability

WordPress Plugin: simple-301-redirects: CVE-2021-24354: Missing Authorization

Severity
7
CVSS
(AV:N/AC:L/Au:S/C:P/I:P/A:P)
Published
May 26, 2021
Added
May 15, 2025
Modified
Apr 30, 2026

Description

A lack of capability checks and insufficient nonce check on the AJAX action in the Simple 301 Redirects by BetterLinks WordPress plugin before 2.0.4, made it possible for authenticated users to install arbitrary plugins on vulnerable sites.

Solution

simple-301-redirects-plugin-cve-2021-24354
Title
Rapid7 Labs

2026 Global Threat Landscape Report

The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.