Japanized for WooCommerce <= 2.8.4 — Missing Authorization to Unauthenticated Paidy Order Manipulation
CVE-2026-1305Published · Updated Action summary
Affected: ≤2.8.4Update to 2.8.5 or newer
All remediation steps- Severity
- Medium5.3
- CVSS
- 5.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:NConfidentiality- None
I:LIntegrity- Low
A:NAvailability- None
- Weakness
- CWE-287 Improper Authentication
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Japanized for WooCommerce woocommerce-for-japan
- Affected≤ 2.8.4
- Patched in2.8.5
Update to 2.8.5 or newer.
You are affected if you run ≤ 2.8.4. Version 2.8.5 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Japanized for WooCommerce.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 2.8.5, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Japanized for WooCommerce to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Osvaldo Noe Gonzalez Del Rio (Os).
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.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Japanized for WooCommerce
All 7| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.3 | Missing Authorization ≤2.9.12Update to 2.9.13 | CVE-2026-57340 | |
| Medium5.3 | Missing Authorization to Unauthenticated Order Status Modification ≤2.7.17Update to 2.8.0 | CVE-2025-14886 | |
| Medium4.3 | Cross-Site Request Forgery ≤2.6.40Update to 2.6.41 | CVE-2025-48284 | |
| Medium6.5 | Missing Authorization ≤2.6.4Update to 2.6.5 | CVE-2023-47698 | |
| Medium6.1 | Reflected Cross-Site Scripting ≤2.5.6Update to 2.5.7 | CVE-2023-0948 |
- Medium5.3Missing Authorization
≤2.9.12Update to 2.9.13
- Medium5.3Missing Authorization to Unauthenticated Order Status Modification
≤2.7.17Update to 2.8.0
- Medium4.3Cross-Site Request Forgery
≤2.6.40Update to 2.6.41
- Medium6.5Missing Authorization
≤2.6.4Update to 2.6.5
- Medium6.1Reflected Cross-Site Scripting
≤2.5.6Update to 2.5.7
Timeline
CVE published
Severity medium, CVSS 5.3
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.