CVE-2026-4081
No known patch is available for this vulnerability.
The affected plugin has been removed from the WordPress.org directory, and no patched version is being distributed through the official directory. If you have the affected software installed, you should uninstall or replace it rather than wait for an update.
Description
The ZeM STL plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the [zemstl] shortcode in all versions up to and including 1.0. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes, specifically the 'url', 'color', and 'bgcolor' parameters. These attribute values are directly interpolated into HTML attribute context without being passed through esc_attr() or any other escaping function. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2- Range: <=1.0
Patches
Vulnerability mechanics
References
9- plugins.trac.wordpress.org/browser/zem-stl-viewer/tags/1.0/zemstl.phpnvd
- plugins.trac.wordpress.org/browser/zem-stl-viewer/tags/1.0/zemstl.phpnvd
- plugins.trac.wordpress.org/browser/zem-stl-viewer/tags/1.0/zemstl.phpnvd
- plugins.trac.wordpress.org/browser/zem-stl-viewer/tags/1.0/zemstl.phpnvd
- plugins.trac.wordpress.org/browser/zem-stl-viewer/trunk/zemstl.phpnvd
- plugins.trac.wordpress.org/browser/zem-stl-viewer/trunk/zemstl.phpnvd
- plugins.trac.wordpress.org/browser/zem-stl-viewer/trunk/zemstl.phpnvd
- plugins.trac.wordpress.org/browser/zem-stl-viewer/trunk/zemstl.phpnvd
- www.wordfence.com/threat-intel/vulnerabilities/id/07e415f9-42f1-4c80-a023-38f460f634d3nvd
News mentions
1- Wordfence Intelligence Weekly WordPress Vulnerability Report (June 1, 2026 to June 7, 2026)Wordfence Blog · Jun 11, 2026