Newsletters

WordPress plugin · newsletters · WordPress.org ↗

Critical

High

Known total

Unfixed

Running Newsletters on your site? WP Alerts checks your installed version against every entry below and emails you only when one affects you. Free, no tracking.

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Severity	Vulnerability	Affected	Fixed in	CVE	Published
HIGH CVSS 8.1	Newsletters < 4.16 - Unauthenticated PHP Object Injection via Date Form Field CVE.org	>=0, <4.16	v4.16	CVE-2026-16267	Aug 8, 2026
HIGH CVSS 8.2	Newsletters < 4.16 - Unauthenticated Server-Side Request Forgery via SNS Bounce Handler CVE.org	>=0, <4.16	v4.16	CVE-2026-16268	Aug 6, 2026
HIGH CVSS 8.1	Newsletters < 4.15 - Unauthenticated PHP Object Injection via Subscriber Custom Field CVE.org	>=0, <4.15	v4.15	CVE-2026-12583	Jul 14, 2026
MEDIUM CVSS 4.8	Newsletters < 4.17 - Unauthenticated API Access via Predictable API Key CVE.org	>=0, <4.17	v4.17	CVE-2026-17520	Aug 29, 2026
MEDIUM CVSS 5.4	Newsletters < 4.17 - Arbitrary Plugin Option Update via CSRF CVE.org	>=0, <4.17	v4.17	CVE-2026-17522	Aug 29, 2026
MEDIUM CVSS 4.8	Newsletters < 4.16 - Unauthenticated API Authentication Bypass via Type Juggling CVE.org	>=0, <4.16	v4.16	CVE-2026-16269	Aug 8, 2026

Data aggregated from WPVulnerability, NVD/NIST, ENISA EUVD, CVE.org and WordPress.org. Provided as-is; verify with the plugin author before acting. Disclaimer.