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I. Basic Information for CVE-2026-23744
Vulnerability Information
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Vulnerability Title
REC in MCPJam inspector due to HTTP Endpoint exposes
Source: NVD (National Vulnerability Database)
Vulnerability Description
MCPJam inspector is the local-first development platform for MCP servers. Versions 1.4.2 and earlier are vulnerable to remote code execution (RCE) vulnerability, which allows an attacker to send a crafted HTTP request that triggers the installation of an MCP server, leading to RCE. Since MCPJam inspector by default listens on 0.0.0.0 instead of 127.0.0.1, an attacker can trigger the RCE remotely via a simple HTTP request. Version 1.4.3 contains a patch.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
关键功能的认证机制缺失
Source: NVD (National Vulnerability Database)
Vulnerability Title
MCPJam Inspector 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MCPJam Inspector是MCPJam开源的一个针对模型上下文协议的开源调试与质量分析工具。 MCPJam inspector 1.4.2及之前版本存在安全漏洞，该漏洞源于特制HTTP请求可触发MCP服务器安装，可能导致远程代码执行。
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
MCPJaminspector <= 1.4.2 -
II. Public POCs for CVE-2026-23744
#POC DescriptionSource LinkShenlong Link
1MCPJam inspector is the local-first development platform for MCP servers. The Latest version 1.4.2 and earlier are vulnerable to a remote code execution (RCE) vulnerability, which allows an attacker to send a crafted HTTP request that triggers the installation of an MCP server, leading to RCE. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-23744.yamlPOC Details
2CVE-2026-23744 - Versions 1.4.2 and earlier of MCPJam inspector are vulnerable to remote code execution (RCE). Because the tool listens on 0.0.0.0 by default, an attacker can trigger the installation and execution of a malicious MCP server by sending a crafted HTTP request. Version 1.4.3 contains a patch for this issue.https://github.com/boroeurnprach/CVE-2026-23744-PoCPOC Details
3Nonehttps://github.com/rootdirective-sec/CVE-2026-23744-LabPOC Details
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III. Intelligence Information for CVE-2026-23744
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IV. Related Vulnerabilities
Same product: inspector
Same weakness: CWE-306
V. Comments for CVE-2026-23744

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