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I. Basic Information for CVE-2026-4239
Vulnerability Information

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Vulnerability Title
Lagom WHMCS Template Datatables prototype pollution
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was found in Lagom WHMCS Template up to 2.3.7. Impacted is an unknown function of the component Datatables. The manipulation results in improperly controlled modification of object prototype attributes. It is possible to launch the attack remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
CWE-1321
Source: NVD (National Vulnerability Database)
Vulnerability Title
RS Studio Lagom WHMCS Template 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
RS Studio Lagom WHMCS Template是波兰RS Studio公司的一个网站模版和前端主题。 RS Studio Lagom WHMCS Template 2.3.7及之前版本存在安全漏洞,该漏洞源于对组件Datatables的操作导致对象原型属性修改不当,可能导致原型污染攻击。
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
VendorProductAffected VersionsCPESubscribe
LagomWHMCS Template 2.3.0 -
II. Public POCs for CVE-2026-4239
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III. Intelligence Information for CVE-2026-4239
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IV. Related Vulnerabilities
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