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I. Basic Information for CVE-2026-3404
Vulnerability Information

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Vulnerability Title
thinkgem JeeSite Endpoint CasOutHandler.java xml external entity reference
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw has been found in thinkgem JeeSite up to 5.15.1. Impacted is an unknown function of the file /com/jeesite/common/shiro/cas/CasOutHandler.java of the component Endpoint. Executing a manipulation can lead to xml external entity reference. The attack may be performed from remote. Attacks of this nature are highly complex. The exploitability is considered difficult. The exploit has been published and may 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:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
XML外部实体引用的不恰当限制(XXE)
Source: NVD (National Vulnerability Database)
Vulnerability Title
JeeSite 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
JeeSite是济南卓源(thinkgem)开源的一个Java快速开发平台。 JeeSite 5.15.1及之前版本存在代码问题漏洞,该漏洞源于对文件/com/jeesite/common/shiro/cas/CasOutHandler.java中组件的操作,可能导致XML外部实体引用攻击。
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
thinkgemJeeSite 5.15.0 cpe:2.3:a:jeesite:jeesite:*:*:*:*:*:*:*:*
II. Public POCs for CVE-2026-3404
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III. Intelligence Information for CVE-2026-3404
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IV. Related Vulnerabilities
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