Vulnerability Details CVE-2025-54135
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 18.1%
CVSS Severity
CVSS v3 Score 8.5
Products affected by CVE-2025-54135
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cpe:2.3:a:anysphere:cursor:0.50
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cpe:2.3:a:anysphere:cursor:0.50.1
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cpe:2.3:a:anysphere:cursor:0.50.2
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cpe:2.3:a:anysphere:cursor:0.50.3
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cpe:2.3:a:anysphere:cursor:0.50.4
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cpe:2.3:a:anysphere:cursor:0.50.5
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cpe:2.3:a:anysphere:cursor:0.50.6
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cpe:2.3:a:anysphere:cursor:0.50.7
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cpe:2.3:a:anysphere:cursor:1.0
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cpe:2.3:a:anysphere:cursor:1.0.1
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cpe:2.3:a:anysphere:cursor:1.1
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cpe:2.3:a:anysphere:cursor:1.1.1
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cpe:2.3:a:anysphere:cursor:1.1.2
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cpe:2.3:a:anysphere:cursor:1.1.3
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cpe:2.3:a:anysphere:cursor:1.1.4
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cpe:2.3:a:anysphere:cursor:1.1.5
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cpe:2.3:a:anysphere:cursor:1.1.6
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cpe:2.3:a:anysphere:cursor:1.1.7
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cpe:2.3:a:anysphere:cursor:1.2
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cpe:2.3:a:anysphere:cursor:1.2.1
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cpe:2.3:a:anysphere:cursor:1.2.2
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cpe:2.3:a:anysphere:cursor:1.2.4
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cpe:2.3:a:anysphere:cursor:1.3
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cpe:2.3:a:anysphere:cursor:1.3.1
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cpe:2.3:a:anysphere:cursor:1.3.2
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cpe:2.3:a:anysphere:cursor:1.3.3
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cpe:2.3:a:anysphere:cursor:1.3.4
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cpe:2.3:a:anysphere:cursor:1.3.5
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cpe:2.3:a:anysphere:cursor:1.3.6
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cpe:2.3:a:anysphere:cursor:1.3.7
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cpe:2.3:a:anysphere:cursor:1.3.8