Stored Cross-Site Scripting in Newsletter WordPress Plugin by Newsletter
CVE-2025-3584
Key Information:
- Vendor
WordPress
- Status
- Vendor
- CVE Published:
- 3 June 2025
Badges
What is CVE-2025-3584?
The Newsletter plugin for WordPress prior to version 8.8.2 has a critical vulnerability that fails to adequately sanitize and escape certain Subscription settings. This oversight allows high privilege users, such as administrators, to execute Stored Cross-Site Scripting attacks. Such vulnerabilities can be particularly dangerous in multisite configurations where the unfiltered_html capability is restricted, posing significant risks to website security.
Affected Version(s)
Newsletter 0 < 8.8.2
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