Authorization Flaw in Kit Plugin by ConvertKit
CVE-2026-125439

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Kit (formerly Convertkit)
Vendor
CVE Published:
11 November 2026

What is CVE-2026-125439?

A missing authorization vulnerability in the Kit plugin, previously known as ConvertKit, allows for the exploitation of improperly configured access control levels. This flaw can lead to unauthorized access to sensitive functionalities and data, potentially compromising user security. The issue affects Kit versions up to 3.5.0, requiring immediate attention from users to ensure their installations are secure.

Affected Version(s)

Kit (formerly ConvertKit) 0 <= 3.5.0

References

https://patchstack.com/database/wordpress/plugin/convertk...
vdb-entry

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Kanokwut Thanadkarn | Patchstack Bug Bounty Program
.