Known vulnerabilities in Block for Mailchimp – grow your email list with signup forms

Add Mailchimp email subscription forms to WordPress with a Gutenberg block – inline, popup, or floating layouts. Grow your newsletter list fast.

2Reported vulnerabilities

5.3Highest CVSS score

1.1.17Latest version

2,000+Active installs

What to do now

Update Block for Mailchimp – grow your email list with signup forms to 1.1.16 or later. 2 of these have a fixed version available. Updating resolves them.

Plugin last updated: July 26, 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-2026-56063	Medium 5.3	0.3%	1.1.15 and earlier	`1.1.16`	June 25, 2026
CVE-2025-10735	Medium 4	0.3%	0 to 1.1.12 (inclusive)	`1.1.13`	October 1, 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.