CVE-2026-8938 auto making JSON-LD <= 4.5.3 - Cross-Site Request Forgery to Plugin Certification Settings via Nonce Validation Bypass
Unauthenticated attackers can trick administrators into updating license settings and installing unauthorized pro features via CSRF.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-8938?
CVE-2026-8938 is a medium-severity vulnerability in nakamura1458 auto making JSON-LD, published on 27 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-352
Which versions are affected by CVE-2026-8938?
How do I fix CVE-2026-8938?
No fix has been published for CVE-2026-8938 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-8938 being exploited?
There is no known exploitation of CVE-2026-8938 in the wild and no public exploit code.
Sources
Also known as GHSA-fv67-52hv-4432.