CVE-2026-86823
Medium
Description
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.
SeverityMedium
CVSS5.3
Exploit probability—
ProductNewsletter
PublishedSep 16, 2026
First seenSep 16, 2026
Weakness typeCWE-601Open redirect
How to fix
Update
- Newsletter9.3.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Newsletter | v < 9.3.7 | 9.3.7 |
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