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CVE-2026-12230— LearnPress <= 4.3.9.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'layout_custom_css'

Quick assessment

Affected
thimpress LearnPress – WordPress LMS Plugin for Create and Sell Online Courses
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress LearnPress是WordPress基金会的一款学习管理系统插件。 WordPress LearnPress 4.3.9.1及之前版本存在跨站脚本漏洞，该漏洞源于对'layout_custom_css'参数的输入清理和输出转义不足，可能导致经身份验证的具有贡献者级别及以上权限的攻击者注入任意Web脚本。

CVSS 6.4 · Medium EPSS 0.20% · P11

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise

Affected Version Matrix 1

VendorProduct Version RangeStatus
thimpress LearnPress – WordPress LMS Plugin for Create and Sell Online Courses ≤ 4.3.9.1 affected
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I. Basic Information for CVE-2026-12230

Vulnerability Information
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Vulnerability Title
LearnPress <= 4.3.9.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'layout_custom_css'
Source: CVE Program / CVE List V5
Vulnerability Description
The LearnPress – WordPress LMS Plugin for Create and Sell Online Courses plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'layout_custom_css' parameter in all versions up to, and including, 4.3.9.1 due to insufficient input sanitization and output escaping. 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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
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: CVE Program / CVE List V5
Vulnerability Title
WordPress LearnPress 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress LearnPress是WordPress基金会的一款学习管理系统插件。 WordPress LearnPress 4.3.9.1及之前版本存在跨站脚本漏洞，该漏洞源于对'layout_custom_css'参数的输入清理和输出转义不足，可能导致经身份验证的具有贡献者级别及以上权限的攻击者注入任意Web脚本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
thimpress LearnPress – WordPress LMS Plugin for Create and Sell Online Courses 0 ~ 4.3.9.1 -

II. Public POCs for CVE-2026-12230

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III. Intelligence Information for CVE-2026-12230

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Patches & Fixes for CVE-2026-12230 (1)

Vendor Pages for CVE-2026-12230 (2)

Other References for CVE-2026-12230 (1)

IV. Related Vulnerabilities

Same product: LearnPress – WordPress LMS Plugin for Create and Sell Online Courses
Same vendor: thimpress
Same weakness: CWE-79

V. Comments for CVE-2026-12230

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