Cursor
CVE-2025-54135
HIGH
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization OS command sanitization, avoid shell exec
MITRE ATT&CK
2 techniques across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 8.5 (HIGH). Attack characteristics: network attack vector, high complexity, low privileges required, no user interaction not required. EPSS exploitation probability: 0.08%. |
| Exploit ScenarioDerived | A remote attacker could execute arbitrary operating system commands on the host by sending crafted requests to the affected application. |
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Alert meAnalysisAIv1 – Mar 28, 2026
Cursor is a code editor built for programming with AI. Rated high severity (CVSS 8.5), this vulnerability is remotely exploitable. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Avoid passing user input to shell commands. Use language-specific APIs instead of shell execution. Apply strict input validation with allowlists.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as OS Command Injection (CWE-78), which allows attackers to execute arbitrary operating system commands on the host. 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. Affected products include: Anysphere Cursor. Version information: version 1.3.9..
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
DescriptionGitHub Advisory
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.
Executive ViewAI
Organizations using Cursor face significant risk from CVE-2025-54135, a OS command injection vulnerability rated CVSS 8.5. Successful exploitation could allow attackers to execute arbitrary code or commands on affected systems, potentially leading to full system compromise. Organizations should apply vendor updates when available and consider compensating controls in the interim.
Apply vendor patch. If immediate patching is not feasible: (1) Deploy WAF rules to block injection patterns; (2) Restrict network access to affected components; (3) Enable enhanced logging for suspicious activity.
Threat Intelligence Overview
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
OS command injection occurs when an application passes unsanitized user input directly into system shell commands.
Affected Products (CPE)GitHub Advisory
Arbitrary code execution in Cursor for Windows 3.2.16 lets remote attackers run code on a developer's machine by plantin
Remote code execution in Cursor IDE 1.6.23 and below can be triggered by prompt injection that abuses case-insensitive p
Cursor AI code editor before 2.3 allows prompt injection to bypass the Agent's Allowlist mode. Shell built-ins can execu
Sandbox escape leading to non-sandboxed remote code execution in Cursor (the AI code editor) prior to version 3.0, where
Sandbox escape leading to non-sandboxed remote code execution affects the Cursor AI code editor prior to version 3.0, wh
Cursor is a code editor built for programming with AI. In versions 1.7 and below, automatic loading of project-specific
Remote code execution in Cursor CLI Agent 1.7 and earlier can be triggered by unauthenticated attackers through prompt i
Cursor is a code editor built for programming with AI. Rated high severity (CVSS 8.8), this vulnerability is remotely ex
Cursor is a code editor built for programming with AI. In versions 1.7 and below, when MCP uses OAuth authentication wit
Cursor is a code editor built for programming with AI. Rated high severity (CVSS 8.8), this vulnerability is remotely ex
Cursor is a code editor built for programming with AI. Rated high severity (CVSS 8.8), this vulnerability is remotely ex
Cursor is a code editor built for programming with AI. versions up to 2.0 is affected by os command injection.
GitHub PoC
Exploit-DB