CVE-2026-1830 Details.
Quick Playground <= 1.3.1 - Missing Authorization to Unauthenticated Arbitrary File Upload
Atlas does not check this one. Needs requests that change data.
To test for this one, the check would have to send requests that could change data on the site. Atlas only ever reads public pages, so it does not run this check.
About CVE-2026-1830. What It Means.
The Quick Playground plugin for WordPress is vulnerable to remote code execution in all versions up to, and including, 1.3.1. The plugin exposes a blueprint REST API endpoint (permission_callback: __return_true) that leaks the sync code, and an upload_image endpoint that accepts file uploads with path traversal in the filename parameter without sufficient authorization checks, which can be chained into arbitrary PHP file upload and RCE.
Affected Product. What Is Hit.
- Vendor
- davidfcarr
- Product
- Davidfcarr Quick Playground
References. Where To Read More.
- https://nvd.nist.gov/vuln/detail/CVE-2026-1830
- https://www.wordfence.com/threat-intel/vulnerabilities/id/308cd28a-a477-4bc6-a392-ad5a9eca1cb5?source=cve
- https://plugins.trac.wordpress.org/browser/quick-playground/trunk/api.php#L39
- https://plugins.trac.wordpress.org/browser/quick-playground/trunk/expro-api.php#L419
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3500839%40quick-playground&new=3500839%40quick-playground&sfp_email=&sfph_mail=
FAQ
Common Questions.
Quick Playground <= 1.3.1 - Missing Authorization to Unauthenticated Arbitrary File Upload. The Quick Playground plugin for WordPress is vulnerable to remote code execution in all versions up to, and including, 1.3.1. The plugin exposes a blueprint REST API endpoint (permission_callback: __return_true) that leaks the sync code, and an upload_image endpoint that accepts file uploads with path traversal in the filename parameter without sufficient authorization checks, which can be chained into arbitrary PHP file upload and RCE.
No. To test for this one, the check would have to send requests that could change data on the site. Atlas only ever reads public pages, so it does not run this check. The facts about CVE-2026-1830 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
CVE-2026-1830 is not on the CISA Known Exploited Vulnerabilities list at the time of writing, but it is still worth fixing.
Update Davidfcarr Quick Playground to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. Vendor links are listed on this page when they are known.
This page lists the public facts about CVE-2026-1830. Atlas does not run a check for it, so nothing here says whether a particular site is affected.