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CVE-2026-63227— Unrestricted SCORM file upload vulnerability

Quick assessment

Affected
An unrestricted SCORM file upload vulnerability in Koollab LMS allowed an authenticated module designer to upload a SCORM package containing a PHP webshell to a publicly accessible directory and execute arbitrary code on the server. Koollab LMS
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.

Koollab Koollab LMS是丹麦Koollab公司的一个学习管理平台。 Koollab LMS 5.3.2版本存在安全漏洞，该漏洞源于不受限制的SCORM文件上传，可能导致认证的模块设计者上传包含PHP webshell的SCORM包到公开可访问目录并执行任意代码。

CVSS 9.9 · Critical EPSS 0.59% · P47
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I. Basic Information for CVE-2026-63227

Vulnerability Information
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Vulnerability Title
Unrestricted SCORM file upload vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
An unrestricted SCORM file upload vulnerability in Koollab LMS allowed an authenticated module designer to upload a SCORM package containing a PHP webshell to a publicly accessible directory and execute arbitrary code on the server.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Koollab LMS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Koollab Koollab LMS是丹麦Koollab公司的一个学习管理平台。 Koollab LMS 5.3.2版本存在安全漏洞，该漏洞源于不受限制的SCORM文件上传，可能导致认证的模块设计者上传包含PHP webshell的SCORM包到公开可访问目录并执行任意代码。
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
An unrestricted SCORM file upload vulnerability in Koollab LMS allowed an authenticated module designer to upload a SCORM package containing a PHP webshell to a publicly accessible directory and execute arbitrary code on the server. Koollab LMS 5.3.2 -

II. Public POCs for CVE-2026-63227

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III. Intelligence Information for CVE-2026-63227

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Vendor Advisories for CVE-2026-63227 (1)

IV. Related Vulnerabilities

Same product: Koollab LMS

V. Comments for CVE-2026-63227

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