CVE-2026-1830criticalobserved exploitationCWE-862

CVE-2026-1830: critical vulnerability in davidfcarr Quick Playground

Quick Playground <= 1.3.1 - Missing Authorization to Unauthenticated Arbitrary File Upload

Published

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85Vexday Risk Score

Patch now. It exploitation observed by VulnCheck and has a working public exploit.

ssvc Actcvss 9.8epss 8.1%
from disclosure to weapon50 days
Published on NVDApr 9
1st PoC+50d
VulnCheck+187d
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
davidfcarr · Quick Playground
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CVE-2026-6403HIGHQuick Playground <= 1.3.3 - Unauthenticated Path Traversal to Arbitrary File Read via 'stylesheet' ParameterEPSS 0.8%CVE-2026-2500MEDIUMQuick Playground <= 1.3.4 - Authenticated (Administrator+) Arbitrary File Read via 'filename' ParameterEPSS 0.3%