CVE-2026-86823
The Newsletter WordPress plugin before 9.3.7 does not validate the destination of the redirect performed after a public subscription action, allowing unauthenticated attackers to redirect users to arbitrary external sites and to disclose a subscriber token that grants access to that subscriber record's front-end actions.
- Published Sep 16, 2026
- CVSS 5.3 medium
- 0.3% chance of exploitation in the next 30 days (EPSS)
- A fix is available