Known vulnerabilities in SmartSMTP

Reliable Email Delivery with SmartSMTP

1Reported vulnerabilities

7.2Highest CVSS score

1.2.1Latest version

2,000+Active installs

What to do now

Update SmartSMTP to 1.2.1 or later. 1 of these have a fixed version available. Updating resolves them.

Plugin last updated: August 17, 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-2026-66606	High 7.2	0.2%	1.2.0 and earlier	`1.2.1`	August 19, 2026

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