Vulnerability Analysis
Cursor Desktop sandbox escape via agent-controlled working directory
CVE-2026-50548
Cursor is a code editor built for programming with AI. Prior to 3.0, Cursor runs agent terminal commands in a sandbox by default, and the sandbox grants write access to the command's working directory. A flaw was identified in how the agent could modify the working_directory parameter, which could cause the sandbox to include writable paths outside the intended workspace. A malicious agent could set working_directory to a sensitive location and write arbitrary files outside the workspace under the user's privileges. This enables non-sandboxed Remote Code Execution — for example by overwriting the cursorsandbox helper so later commands run unsandboxed — with no user interaction beyond a benign prompt. This vulnerability is fixed in 3.0.
No Active Exploit Signals
CVSS Base Score
9.3
CRITICAL
Exploitability:-
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EPSS:-
Threat Intelligence Signals
CISA KEV
No
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Ransomware Use
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VulnCheck In-the-Wild
No
Nuclei Template
No
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SSVC Exploitation
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SSVC Automatable
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Identity & Timeline
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| Exploit DB References | None identified |
Affected Products & Versions
| Vendor | Product | Affected Versions |
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| No affected products specified. | ||
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