CVE-2026-86823
Newsletter < 9.3.7 - Unauthenticated Open Redirect and Subscriber Token Disclosure via ncu Parameter
- State
- Published
- Severity
- 5.3 Medium
- Published
- Sep 16, 2026
- Updated
- Sep 17, 2026
- Reserved
- Sep 8, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N | CISA-ADP |
Weaknesses
- CWE-601 URL Redirection to Untrusted Site ('Open Redirect')
Affected Products
| Product | Versions |
|---|---|
NewsletterUnknown |
|
References
- https://wpscan.com/vulnerability/2db98679-24ca-494e-a8fd-f6417a0f1ea8/exploitvdb-entrytechnical-description
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