WP Vulnerability WatchVulnerability data as of September 7, 2026

Known vulnerabilities in Kit (formerly ConvertKit) – Email Newsletter, Email Marketing, Membership, Subscribers and Landing Pages

Build your email subscriber lists, send email marketing newsletters, create landing pages, build custom subscription forms with the Form Builder block …

5Reported vulnerabilities
6.1Highest CVSS score
3.3.8Latest version
40,000+Active installs

What to do now

Update Kit (formerly ConvertKit) – Email Newsletter, Email Marketing, Membership, Subscribers and Landing Pages to 3.3.6 or later. 5 of these have a fixed version available. Updating resolves them.

Plugin last updated: August 10, 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.

CVESeverityExploit probability
next 30 days		 Affected versionsFixed inPublished
CVE-2023-2337 Medium 6.1 0.5% Before 2.2.1 2.2.1 June 5, 2023
CVE-2022-4508 Medium 5.4 0.5% Before 2.0.5 2.0.5 January 16, 2023
CVE-2024-31245 Medium 5.3 0.5% 2.4.5 and earlier 2.4.6 April 5, 2024
CVE-2026-65472 Medium 5.3 0.3% 3.3.5 and earlier 3.3.6 July 22, 2026
CVE-2024-3961 Medium 5.3 0.4% Before 2.4.9.1 2.4.9.1 June 21, 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.