Known vulnerabilities in Connect Contact Form 7 to Mailchimp, Brevo, MailerLite & Klaviyo

CF7 Mailchimp integration: send Contact Form 7 leads and signup forms to your Mailchimp audience, or to Brevo, MailerLite, and Klaviyo lists.

4Reported vulnerabilities

7.2Highest CVSS score

0.9.81.09Latest version

40,000+Active installs

What to do now

Update Connect Contact Form 7 to Mailchimp, Brevo, MailerLite & Klaviyo to 0.9.78.07 or later. 4 of these have a fixed version available. Updating resolves them.

Plugin last updated: August 15, 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-2026-15000	High 7.2	0.6%	0 to 0.9.78.06 (inclusive)	`0.9.78.07`	July 9, 2026
CVE-2024-22134	Medium 5.4	0.3%	0.5.70 and earlier	`0.9.19`	January 8, 2024
CVE-2025-68989	Medium 4.3	0.2%	0.9.54 and earlier	`0.9.69`	December 21, 2025
CVE-2024-33677	Medium 4.3	0.2%	0.5.73 and earlier	`0.9.19`	April 26, 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.