CVE-2026-6403

Summary

The Quick Playground plugin for WordPress is vulnerable to Path Traversal in versions up to and including 1.3.3. This is due to insufficient path validation in the qckply_zip_theme() function, which appends a user-controlled 'stylesheet' parameter directly to the theme root directory path without sanitizing directory traversal sequences. This makes it possible for unauthenticated attackers to trigger the creation of a ZIP archive containing arbitrary files from the server's filesystem — including wp-config.

Affected Software

Weaknesses

• CWE-22: CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: partial

References

• https://www.wordfence.com/threat-intel/vulnerabilities/id/a39dccb6-b635-44af-b0e0-c3010b719773?source=cve
• https://plugins.trac.wordpress.org/browser/quick-playground/trunk/utility.php#L162
• https://plugins.trac.wordpress.org/browser/quick-playground/tags/1.3.1/utility.php#L162
• https://plugins.trac.wordpress.org/browser/quick-playground/trunk/api.php#L62
• https://plugins.trac.wordpress.org/browser/quick-playground/tags/1.3.1/api.php#L62
• https://plugins.trac.wordpress.org/browser/quick-playground/trunk/utility.php#L248
• https://plugins.trac.wordpress.org/browser/quick-playground/tags/1.3.1/utility.php#L248
• https://plugins.trac.wordpress.org/browser/quick-playground/trunk/api.php#L631
• https://plugins.trac.wordpress.org/browser/quick-playground/tags/1.3.1/api.php#L631
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3523317%40quick-playground&new=3523317%40quick-playground&sfp_email=&sfph_mail=
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3514238%40quick-playground&new=3514238%40quick-playground&sfp_email=&sfph_mail=

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