Known vulnerabilities in Forms for Mailchimp by Optin Cat – Grow Your MailChimp List

Forms for Mailchimp by Optin Cat helps you grow your MailChimp list. Create popups, inline forms, sidebar widgets & more.

3Reported vulnerabilities

6.1Highest CVSS score

2.6.2Latest version

2,000+Active installs

What to do now

Update Forms for Mailchimp by Optin Cat – Grow Your MailChimp List to 2.5.8 or later. 3 of these have a fixed version available. Updating resolves them.

Plugin last updated: August 16, 2026 / Tested up to WordPress: 7.1 / 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-2024-8870	Medium 6.1	0.5%	0 to 2.5.6 (inclusive) 0 to 2.5.6 (inclusive)	`2.5.8`	October 26, 2024
CVE-2023-47545	Medium 5.5	0.4%	2.5.4 and earlier	`2.5.5`	November 7, 2023
CVE-2024-7489	Medium 4.4	0.3%	0 to 2.5.7 (inclusive)	`2.5.8`	October 12, 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.