WordPress plugin
Kit (formerly ConvertKit) – Email Subscribers, Email Newsletter, Email Marketing, Landing Pages and Membership security & vulnerabilities
No known unpatched vulnerabilities in the latest version
All 8 known vulnerabilities are fixed in the latest release. If you run an older version, update to null or newer.
- Critical0
- High0
- Medium8
- Low0
All Kit (formerly ConvertKit) – Email Subscribers, Email Newsletter, Email Marketing, Landing Pages and Membership vulnerabilities
| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.3 | Missing Authorization ≤3.5.0Update to 3.5.1 | CVE-2026-125439 | |
| Medium5.3 | Missing Authorization ≤3.4.7Update to 3.4.8 | CVE-2026-27063 | |
| Medium5.3 | Missing Authorization ≤3.4.6Update to 3.4.7 | CVE-2026-110880 | |
| Medium5.3 | Missing Authorization ≤3.3.5Update to 3.3.6 | CVE-2026-65472 | |
| Medium5.3 | Missing Authorization ≤2.4.9Update to 2.4.9.1 | CVE-2024-3961 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure ≤2.4.5Update to 2.4.6 | CVE-2024-31245 | |
| Medium6.1 | Reflected Cross-Site Scripting ≤2.2.0Update to 2.2.1 | CVE-2023-2337 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode ≤2.0.4Update to 2.0.5 | CVE-2022-4508 |
- Medium5.3Missing Authorization
≤3.5.0Update to 3.5.1
- Medium5.3Missing Authorization
≤3.4.7Update to 3.4.8
- Medium5.3Missing Authorization
≤3.4.6Update to 3.4.7
- Medium5.3Missing Authorization
≤3.3.5Update to 3.3.6
- Medium5.3Missing Authorization
≤2.4.9Update to 2.4.9.1
- Medium5.3Unauthenticated Sensitive Information Exposure
≤2.4.5Update to 2.4.6
- Medium6.1Reflected Cross-Site Scripting
≤2.2.0Update to 2.2.1
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
≤2.0.4Update to 2.0.5
Kit (formerly ConvertKit) – Email Subscribers, Email Newsletter, Email Marketing, Landing Pages and Membership: common questions
Does Kit (formerly ConvertKit) – Email Subscribers, Email Newsletter, Email Marketing, Landing Pages and Membership have known vulnerabilities?
Yes. VulnCrest Radar lists 8 known vulnerabilities in Kit (formerly ConvertKit) – Email Subscribers, Email Newsletter, Email Marketing, Landing Pages and Membership: 8 medium. None are known to affect version null.
How do I check which version of Kit (formerly ConvertKit) – Email Subscribers, Email Newsletter, Email Marketing, Landing Pages and Membership I run?
In wp-admin open Plugins → Installed Plugins; the version is shown under the name. Without admin access, our passive Check my site tool can often read it from public files.
What is the most recent Kit (formerly ConvertKit) – Email Subscribers, Email Newsletter, Email Marketing, Landing Pages and Membership vulnerability?
CVE-2026-125439, published Nov 11, 2026: Kit (formerly ConvertKit) – Email Subscribers, Email Newsletter, Email Marketing, Landing Pages and Membership <= 3.5.0 - Missing Authorization. Severity: Medium (CVSS 5.3).
Is any Kit (formerly ConvertKit) – Email Subscribers, Email Newsletter, Email Marketing, Landing Pages and Membership vulnerability listed in CISA KEV?
No. None of the known Kit (formerly ConvertKit) – Email Subscribers, Email Newsletter, Email Marketing, Landing Pages and Membership vulnerabilities is currently listed in the CISA KEV catalog.