CVE-2026-125439: Kit (formerly ConvertKit) (WordPress plugin) · Missing Authorization
Affects Kit (formerly ConvertKit) (WordPress plugin)Source CVE Database V5
Not known to be exploited · CVSS 5.3 Medium : upgrade to 3.5.1 when convenient.
Data as of 11 Nov 2026, 12:05 UTC
Thin evidence
One scorer or none| CNA (Patchstack) | CVSS 3.1 | 5.3 |
|---|
- Patch
- Available – fixed in 3.5.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 11 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.
What to do
Upgrade Kit (formerly ConvertKit) (WordPress plugin) to 3.5.1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Kit (formerly ConvertKit)convertkit | Affected
| Fixed in
|
AI-suggested
Users of Kit Kit (formerly ConvertKit) should upgrade to version 3.5.1 or later, where the missing authorization vulnerability has been fixed. Applying this official patch will remediate the issue. No additional mitigation steps are indicated by the vendor advisory.
Description
CVE-2026-125439 is a Missing Authorization vulnerability in Kit Kit (formerly ConvertKit) affecting versions prior to 3.5.1. This flaw allows exploitation due to incorrectly configured access control security levels, potentially enabling unauthorized access to certain functions or data. The vulnerability has a medium severity with a CVSS score of 5.3. A fix is available in version 3.5.1.