WordPress
CVE-2026-1305
MEDIUM
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
The Japanized for WooCommerce plugin through version 2.8.4 fails to properly validate webhook signatures, allowing unauthenticated attackers to bypass payment authentication and fraudulently update order statuses to "Processing" or "Completed" without actual payment. An attacker can exploit this by omitting the signature header in POST requests to the Paidy webhook endpoint, resulting in the permission check unconditionally returning true. No patch is currently available.
Technical ContextAI
This vulnerability (CWE-287: Improper Authentication) affects Japanized for WooCommerce (WordPress plugin). 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 t
Affected ProductsAI
Vendor: WordPress. Product: Japanized for WooCommerce (WordPress plugin). Versions: up to 2.8.4..
RemediationAI
Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.
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Same weakness CWE-287 – Improper Authentication
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External POC / Exploit Code
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