Is CVE-2026-1305 actively exploited?

No active exploitation of CVE-2026-1305 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-1305 be exploited remotely?

Yes. CVE-2026-1305 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-1305?

CVE-2026-1305 has a CVSS score of 5.3 (MEDIUM).

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MEDIUM

CVE-2026-1305

CWE-287Published: February 27, 2026· Updated: Feb 27, 2026

5.3

CVSS v3.1

EPSS:0.19%probability of exploitation in 30 daysPercentile:41.0th

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.

NVD Source

Technical Analysis

CVE-2026-1305 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.