Improper Redirection in Newsletter WordPress Plugin
CVE-2026-86823
Currently unrated
Key Information:
- Vendor
WordPress
- Status
- Vendor
- CVE Published:
- 16 September 2026
Badges
👾 Exploit Exists🟡 Public PoC
What is CVE-2026-86823?
The Newsletter WordPress plugin prior to version 9.3.7 has a security flaw due to insufficient validation of redirect destinations following public subscription actions. This vulnerability enables unauthenticated attackers to manipulate redirects, potentially leading users to malicious external sites. Additionally, it exposes subscriber tokens that could be exploited to perform unauthorized actions on the subscriber’s behalf, compromising user data and privacy.
Affected Version(s)
Newsletter 0 < 9.3.7
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.