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I. Basic Information for CVE-2025-54135
Vulnerability Information
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Vulnerability Title
Cursor Agent is vulnerable to prompt injection via MCP Special Files
Source: NVD (National Vulnerability Database)
Vulnerability Description
Cursor is a code editor built for programming with AI. Cursor allows writing in-workspace files with no user approval in versions below 1.3.9, If the file is a dotfile, editing it requires approval but creating a new one doesn't. Hence, if sensitive MCP files, such as the .cursor/mcp.json file don't already exist in the workspace, an attacker can chain a indirect prompt injection vulnerability to hijack the context to write to the settings file and trigger RCE on the victim without user approval. This is fixed in version 1.3.9.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cursor 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cursor是Cursor开源的一个 AI 代码编辑器。 Cursor 1.3.9之前版本存在安全漏洞，该漏洞源于允许未经用户批准写入工作区文件，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
cursorcursor < 1.3.9 -
II. Public POCs for CVE-2025-54135
#POC DescriptionSource LinkShenlong Link
1Nonehttps://github.com/allinsthon/CVE-2025-54135POC Details
2A repo for CVE-2025-54135 reproductionhttps://github.com/Cbdlll/test-mcpPOC Details
3Nonehttps://github.com/anntsmart/CVE-2025-54135POC Details
4A repo for CVE-2025-54135 reproductionhttps://github.com/hn1e13/test-mcpPOC Details
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III. Intelligence Information for CVE-2025-54135
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IV. Related Vulnerabilities
Same product: cursor
Same vendor: cursor
Same weakness: CWE-78
V. Comments for CVE-2025-54135

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