Stored Cross-Site Scripting in Newsletter Plugin by WordPress
CVE-2025-3583
Key Information:
- Vendor
- WordPress
- Status
- Vendor
- CVE Published:
- 5 May 2025
Badges
Summary
The Newsletter plugin for WordPress, prior to version 8.7.1, is prone to a stored Cross-Site Scripting (XSS) vulnerability due to improper sanitization and escaping of certain settings. This flaw enables high privilege users, such as administrators, to execute malicious scripts, even in environments where the unfiltered_html capability is restricted, like multisite installations. If exploited, attackers could leverage this vulnerability to inject harmful scripts, potentially compromising sensitive data or user sessions.
Affected Version(s)
Newsletter 0 < 8.7.1
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.
References
CVSS V3.1
Timeline
- 🟡
Public PoC available
- 👾
Exploit known to exist
Vulnerability published
Vulnerability Reserved