CVE-2026-8938 MEDIUM

CVE-2026-8938: auto making JSON-LD <= 4.5.3 - Cross-Site Request Forgery to Plugin Certification Settings via Nonce Validation Bypass

Vendor Nakamura1458
Product auto making JSON-LD
Weakness CWE-352 · CSRF
Published May 27, 2026
Last update May 27, 2026

CVSS base score

4.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality None
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

The auto making JSON-LD plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 4.5.3. This is due to missing or incorrect nonce validation on the amJL_certification function. This makes it possible for unauthenticated attackers to update the plugin's license key option, and subsequently trigger license validation and pro feature installation on the victim site without the administrator's consent via a forged request granted they can trick a site administrator into performing an action such as clicking on a link. Successful exploitation can trigger downstream calls to amJL_is_license_valid() and amJL_download_and_install_pro_features(), meaning the impact extends beyond a simple settings change to unauthorized installation of plugin components.

Explanation of Vulnerability in Simple Terms

02Summary

The auto making JSON-LD plugin versions 4.5.3 and earlier are vulnerable to cross-site request forgery (CSRF). An attacker can craft a malicious webpage that, when visited by a logged-in site administrator, performs unwanted actions on the site without the admin's knowledge or consent. The vulnerability requires the victim to visit the attacker's page while authenticated.

What an attacker can do

03Attacker Capabilities

Perform unwanted actions on the site by tricking an authenticated admin into visiting a malicious webpage.

Potential impact on your site

04Site Impact

An attacker can modify site settings or content if they trick your admin into clicking a malicious link while logged in.

Conditions required to exploit

05Prerequisites

Site admin must be logged in and visit an attacker-controlled webpage; no special privileges required.

Key dates

06Disclosure timeline

May 27, 2026 CVE published
May 27, 2026 Record updated

Related vulnerabilities

08Related CVE