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OpenAdvisories
Medium · 6.5 CVE-2026-16264 EUVD-2026-85021GHSA-q3j5-fxpp-r5pf

Newsletters < 4.18.1 - Unauthenticated Subscriber Record Overwrite and PII Disclosure via IDOR

Published Sep 23, 2026 · Updated Sep 23, 2026 · Assigned by WPScan

Description

The Newsletters WordPress plugin before 4.18.1 does not perform an ownership check on some of its subscriber management actions, and issues a management session to unauthenticated visitors on request, allowing attackers to read any subscriber's personal data and overwrite any subscriber's record including their email address.

Affected products

VendorProductAffectedFixed
— Newsletters < 4.18.1 4.18.1

References