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CVE-2026-4081— ZeM STL <= 1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes

CVSS 6.4 · Medium EPSS 0.06% · P18

Affected Version Matrix 1

VendorProductVersion RangeStatus
jhdscriptZeM STL≤ 1.0affected
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I. Basic Information for CVE-2026-4081

Vulnerability Information
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Vulnerability Title
ZeM STL <= 1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
jhdscriptZeM STL 0 ~ 1.0 -

II. Public POCs for CVE-2026-4081

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III. Intelligence Information for CVE-2026-4081

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Patches & Fixes for CVE-2026-4081 (1)

Vendor Pages for CVE-2026-4081 (1)

Other References for CVE-2026-4081 (1)

Other References for CVE-2026-4081 (1)

IV. Related Vulnerabilities

Same weakness: CWE-79

V. Comments for CVE-2026-4081

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