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OpenAdvisories
Medium · 4.8 CVE-2026-17520 EUVD-2026-68045GHSA-jf3w-mh76-5398

Newsletters < 4.17 - Unauthenticated API Access via Predictable API Key

Published Aug 29, 2026 · Updated Aug 30, 2026 · Assigned by WPScan

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.

Affected products

VendorProductAffectedFixed
— Newsletters < 4.17 4.17

References