Known vulnerabilities in Simple Newsletter Plugin – Noptin

A fast, GDPR-compliant newsletter plugin. Collect newsletter subscribers, let users subscribe to new post notifications, and send newsletters. ★★★★★

6Reported vulnerabilities

7.2Highest CVSS score

4.3.5Latest version

10,000+Active installs

What to do now

Update Simple Newsletter Plugin – Noptin to 4.4.0 or later. 6 of these have a fixed version available. Updating resolves them.

Plugin last updated: August 6, 2026 / Tested up to WordPress: 7.0.4 / View on wordpress.org

Reported vulnerabilities

Ordered by how urgently they need attention — whether a vulnerability is actually being exploited, and how likely exploitation is, rather than CVSS severity alone.

CVE	Severity	Exploit probability next 30 days	Affected versions	Fixed in	Published
CVE-2021-25033	Medium 6.1	2.3%	Before 1.6.5	`1.6.5`	February 14, 2022
CVE-2022-46803	High 7.2	0.7%	1.10.3 and earlier	`1.11.0`	January 27, 2023
CVE-2026-103482	Medium 5.4	0.3%	0 to 4.3.10 (inclusive)	`4.4.0`	October 10, 2026
CVE-2026-78146	Medium 5.3	0.3%	Before 4.3.3	`4.3.3`	August 26, 2026
CVE-2024-37456	Medium 5.3	0.4%	3.4.2 and earlier	`3.4.3`	July 1, 2024
CVE-2025-49871	Medium 4.4	0.2%	3.8.7 and earlier	`4.0.0`	June 12, 2025

Sources: vulnerability records from NVD, exploitation from CISA KEV, exploit probability from EPSS. Affected versions come from CPE ranges or from the reporting CNA.