CVE-2026-1830 Quick Playground <= 1.3.1 - Missing Authorization to Unauthenticated Arbitrary File Upload
Unauthenticated attackers can upload arbitrary PHP files via REST API endpoints to achieve remote code execution on WordPress sites using the Quick Playground plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-1830?
CVE-2026-1830 is a critical missing authorization vulnerability in davidfcarr Quick Playground, published on 9 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Quick Playground plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 1.3.1. This is due to insufficient authorization checks on REST API endpoints that expose a sync code and allow arbitrary file uploads. This makes it possible for unauthenticated attackers to retrieve the sync code, upload PHP files with path traversal, and achieve remote code execution on the server.
Weakness: CWE-862
Which versions are affected by CVE-2026-1830?
How do I fix CVE-2026-1830?
No fix has been published for CVE-2026-1830 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-1830 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1830 exists.
Public exploit code: 1 Exploit-DB entry and 1 Nuclei template.
Sources
Also known as GHSA-8jp3-8878-6q85.