CVE-2026-17520
Medium
Description
The Newsletters WordPress plugin before 4.17 does not generate its API key using a sufficiently random source, deriving it from a publicly known value, allowing unauthenticated attackers to compute the key and perform privileged actions such as adding and deleting subscribers and sending emails, when the optional API has been enabled.
SeverityMedium
CVSS4.8
Exploit probability—
ProductNewsletters
PublishedAug 29, 2026
First seenAug 29, 2026
Weakness typeCWE-326CWE-326
How to fix
Update
- Newsletters4.17 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Newsletters | v < 4.17 | 4.17 |
Check your version
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