Quick Playground: Filesystem traversal
Quick Playground is affected by filesystem traversal. Exploitation requires at least administrator-level access. A crafted path can escape the intended directory and reach files or directories elsewhere on the server. The published affected range is <= 1.3.4.
- Component
- Quick Playground
- Plugin slug
quick-playground- Affected
- <= 1.3.4
- Safe version
> 1.3.4- Published
- Jun 06, 2026
This CVE was published Jun 06, 2026 and is one of 3 known issues for this plugin.
Update, patch or deactivate.
Update Quick Playground to a release after 1.3.4, or disable and remove it until a fixed version is available.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The Quick Playground plugin for WordPress is vulnerable to Path Traversal in all versions up to, and including, 1.3.4. This is due to the `qckply_data()` function passing the user-supplied `filename` POST parameter directly to `file_get_contents()` without any validation, sanitization, or path restriction. This makes it possible for authenticated attackers, with Administrator-level access and above, to read arbitrary files on the server, such as `wp-config.php` or `/etc/passwd`, which can contain sensitive information. Note: This vulnerability is only exploitable when the site has been synced with WordPress Playground (the `is_qckply_clone` option is set) or when running on `playground.wordpress.net`.
CVE / CNA vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N