CVE-2026-105421 WordPress Kit (formerly ConvertKit) for WooCommerce plugin <= 2.2.0 - Broken Access Control vulnerability
Attackers can bypass access controls in the Kit for WooCommerce plugin to perform unauthorized actions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-105421?
CVE-2026-105421 is a medium-severity missing authorization vulnerability in Kit (formerly ConvertKit) for WooCommerce, published on 5 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Missing Authorization vulnerability in Kit Kit (formerly ConvertKit) for WooCommerce convertkit-for-woocommerce allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Kit (formerly ConvertKit) for WooCommerce: from n/a through 2.2.0.
Weakness: CWE-862
Which versions are affected by CVE-2026-105421?
How do I fix CVE-2026-105421?
No fix has been published for CVE-2026-105421 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-105421 being exploited?
There is no known exploitation of CVE-2026-105421 in the wild and no public exploit code.
Sources
Also known as GHSA-mh22-xwgg-mf44.