CVE-2026-1305 Japanized for WooCommerce <= 2.8.4 - Missing Authorization to Unauthenticated Paidy Order Manipulation
Unauthenticated attackers can bypass payment verification and fraudulently mark orders as completed in the Japanized for WooCommerce plugin.
- 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-2026-1305?
CVE-2026-1305 is a medium-severity missing authorization vulnerability in shoheitanaka Japanized for WooCommerce, published on 27 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Japanized for WooCommerce plugin for WordPress is vulnerable to Improper Authentication in versions up to, and including, 2.8.4. This is due to a flawed permission check in the `paidy_webhook_permission_check` function that unconditionally returns `true` when the webhook signature header is omitted. This makes it possible for unauthenticated attackers to bypass payment verification and fraudulently mark orders as "Processing" or "Completed" without actual payment via a crafted POST request to the Paidy webhook endpoint.
Weakness: CWE-287
Which versions are affected by CVE-2026-1305?
How do I fix CVE-2026-1305?
No fix has been published for CVE-2026-1305 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-2026-1305 being exploited?
There is no known exploitation of CVE-2026-1305 in the wild and no public exploit code.
Sources
Also known as GHSA-rm76-fcj7-6cxh.