---
id: "CVE-2026-125439"
page: "https://infrastack.ai/live/CVE-2026-125439"
kind: "vulnerability"
aliases: ["CVE-2026-125439"]
title: "Kit ConvertKit plugin: missing authorization check lets users bypass access controls"
severity: "medium"
cvss: 5.3
epss: null
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["kit-convertkit", "vendor", "wordpress"]
not_affected_if: ["plugin-not-installed"]
published_at: "2026-11-11T12:19:49+00:00"
first_seen_at: "2026-11-11T12:27:12+00:00"
updated_at: "2026-11-11T12:28:47+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-125439", "first_seen_at": "2026-11-11T12:27:12+00:00"}]
exploit_sources: []
---

# Kit ConvertKit plugin: missing authorization check lets users bypass access controls

Link for people: https://infrastack.ai/live/CVE-2026-125439 (this .md is for agents)

The Kit (formerly ConvertKit) WordPress plugin, versions through 3.5.0, has a missing authorization check. The sources say it stems from incorrectly configured access control levels, so an attacker may reach functions they should not be allowed to use.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed Kit (ConvertKit) plugin version in the WordPress admin under Plugins; affected if it is `3.5.0` or earlier

## Timeline

- 2026-11-11T12:27:12+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-125439

## From the sources

Missing Authorization vulnerability in Kit Kit (formerly ConvertKit) convertkit allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Kit (formerly ConvertKit): from n/a through 3.5.0.

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