Known vulnerabilities in Elastic Email Sender

Reconfigures wp_mail() to send email using Elastic Email API instead of SMTP.

2Reported vulnerabilities

4.4Highest CVSS score

1.2.22Latest version

10,000+Active installs

What to do now

Update Elastic Email Sender to 1.2.21 or later. 2 of these have a fixed version available. Updating resolves them.

Plugin last updated: December 3, 2025 / Tested up to WordPress: 6.9.7 / 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-2023-38387	Medium 4.4	0.4%	1.2.6 and earlier	`1.2.7`	July 20, 2023
CVE-2025-66525	Medium 4.3	0.3%	1.2.20 and earlier	`1.2.21`	October 28, 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.