Japanized for WooCommerce <= 2.8.4 - Missing Authorization to Unauthenticated Paidy Order Manipulation

2026-02-26 21:04

Osvaldo Noe Gonzalez Del Rio (Os)

Strategic Overview

Status

Patched in 2.8.5

Affected PluginJapanized for WooCommerce

Affected Version<= 2.8.4

CVSS5.3Medium

CVECVE-2026-1305

View all Japanized for WooCommerce vulnerabilities

Vulnerability Overview

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.

Technical Analysis

REMEDIATION: Update to version 2.8.5, or a newer patched version --- IDENTIFIER: CWE-287 (Improper Authentication) When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

External References

https://www.cve.org/CVERecord?id=CVE-2026-1305 https://www.wordfence.com/threat-intel/vulnerabilities/id/8cef4b2b-ae8d-4e18-b763-6960a0b944f7

CVSS Vector

5.3

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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