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Vulnerabilities

Vulnerability · CVE-2026-1305

The Japanized for WooCommerce plugin for WordPress is vulnerable to Improper Authentication in versions up to, and including, 2.8.4.

Published Feb 27, 2026 · catalog updated Jun 17, 2026 · The Japanized for WooCommerce

Check if you run it

No confirmed exploitation is on record for CVE-2026-1305. EPSS is 0.42%. Act only if a listed version of The Japanized for WooCommerce is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (The Japanized for WooCommerce).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.42%
Remediation
Version ranges on file
Affected products
stated named in the record

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 function that unconditionally returns 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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • stated named in the record<= 2.8.4

How to fix CVE-2026-1305

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-1305. EPSS is 0.42%. Act only if a listed version of The Japanized for WooCommerce is installed.

Which versions are affected?

Compare what you have installed with named in the record <= 2.8.4. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-287: Improper Authentication. EPSS 0.42%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 27, 2026 · NIST NVD

    Detected

    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 function that unconditionally returns 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 "Co

  2. Jun 17, 2026 · NIST NVD

    Updated

    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 function that unconditionally returns 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 "Co

Sources

  • CVE.orgVulnerability recordCVE-2026-1305

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-1305

    30-day exploitation probability 0.4%

    first.org
  • NIST NVDVulnerability recordCVE-2026-1305

    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 function that unconditionally returns when the webhook sign

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.