Known vulnerabilities in WP Mail SMTP by WPForms – The Most Popular SMTP and Email Log Plugin

Make email delivery easy for WordPress. Connect with SMTP, Gmail, Outlook, SendGrid, Mailgun, SES, Zoho, + more. Rated #1 WordPress SMTP Email plugin.

2Reported vulnerabilities

6.4Highest CVSS score

4.9.0Latest version

4,000,000+Active installs

What to do now

Update WP Mail SMTP by WPForms – The Most Popular SMTP and Email Log Plugin to 4.1.0 or later. 2 of these have a fixed version available. Updating resolves them.

Plugin last updated: June 25, 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
WF-5438a03c-9081-4e1a-ad81-2e7a0f180e84	Medium 6.4	—	Before 1.4.0	`1.4.0`	September 19, 2018
CVE-2024-6694	Low 2.7	0.6%	0 to 4.0.1 (inclusive)	`4.1.0`	July 20, 2024

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