Rapid7

vulnerability

WordPress Plugin: newsletter: CVE-2023-27922: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Severity
4
CVSS
(AV:N/AC:H/Au:N/C:P/I:P/A:N)
Published
Mar 27, 2023
Added
May 15, 2025
Modified
May 4, 2026

Description

The Newsletter plugin for WordPress may be vulnerable to Reflected Cross-Site Scripting via the $_SERVER['REQUEST_URI'] parameter in versions up to, and including, 7.6.8 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a victim into performing an action such as clicking on a link. Only victims using older browser should be impacted as newer browsers urlencode the REQUEST_URI parameter by default

Solution

newsletter-plugin-cve-2023-27922
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.