registry / @cursor/sdk / 1.0.38
@cursor/sdk@1.0.38
TypeScript SDK for Cursor agents.
AI Security Review
scanned 19d ago · by lpm-firewall-aiThe inspected source shows local credential storage and API use constrained to Cursor backend configuration, with no install hook or concrete attack behavior. The scanner signals are not supported by the reviewed source.
Static reason
One or more suspicious static signals were detected.; previous stored version diff introduced dangerous source
Trigger
No malicious install trigger was found; the manifest contains no npm install lifecycle hook.
Impact
No unauthorized credential transfer, agent-control change, or other attack impact was established.
Mechanism
The SDK stores credentials locally, checks the saved backend URL before reusing an API key, and sends authenticated requests through a Cursor API client.
AI rationale
The inspected source shows local credential storage and API use constrained to Cursor backend configuration, with no install hook or concrete attack behavior. The scanner signals are not supported by the reviewed source.
Decision evidence
public snapshotAI called this Clean at 97.0% confidence as Benign with low false-positive risk.
Evidence for AI clean decision
- The manifest routes SDK imports to its runtime bundles and lists build and check scripts; it has no npm install lifecycle hook.
- The CommonJS, ESM, and bundled code validates credentials stored at ~/.cursor/sdk/auth.json.
- The credential store applies restrictive file and directory permissions when saving credentials.
- A saved API key is reused only when its stored backend URL matches the configured Cursor backend; the API client defaults to Cursor's API host.
- The highlighted workspace code parses and sanitizes Cursor project paths, while the SQLite bundles load runtime-provided SQLite drivers.
- The execution wrapper can replace successful command output with its SHA-256 digest when digest-only mode is requested.
Evidence against
Behavioral surface
ChildProcessCryptoDynamicRequireEnvironmentVarsEvalFilesystemNetwork
HighEntropyStrings
Source & flagged code
15 flaggeddist/esm/index.jsView file
•matchType = previous_version_dangerous_delta
matchedPackage = @cursor/sdk@1.0.37
matchedIdentity = npm:QGN1cnNvci9zZGs:1.0.37
similarity = 0.920
summary = stored previous version shares package body but lacks this dangerous source file
Critical
Previous Version Dangerous Delta
This package version adds a dangerous source file absent from the previous stored version; route for source-aware review.
dist/esm/index.jsView on unpkg1import*as t from"@bufbuild/protobuf";import*as r from"@connectrpc/connect";import*as e from"assert";import*as n from"buffer";import*as s from"crypto";import*as i from"events";impor...
High
1import*as t from"@bufbuild/protobuf";import*as r from"@connectrpc/connect";import*as e from"assert";import*as n from"buffer";import*as s from"crypto";import*as i from"events";impor...
High
Sandbox Evasion Gated Capability
Source gates dangerous network, credential, or execution behavior behind CI, host, platform, time, or geo fingerprint checks.
Findings
1 Critical10 High5 Medium7 Low
CriticalPrevious Version Dangerous Deltadist/esm/index.js
HighChild Processdist/esm/index.js
HighSame File Env Network Executiondist/esm/748.js
HighCredential Redirect Persistencedist/cjs/index.js
HighCommand Output Exfiltrationdist/esm/748.js
HighSandbox Evasion Gated Capabilitydist/esm/index.js
HighObfuscated Payload Loaderdist/bundled/index.js
HighRemote Agent Bridgedist/bundled/index.js
HighCross File Remote Execution Contextdist/bundled/index.js
HighTrigger Reachable Command Output Exfiltrationdist/cjs/index.js
HighSemantic Analysis Limiteddist/bundled/index.js
Affected versions and remediation
This report applies to @cursor/sdk@1.0.38.
See all versions of @cursor/sdk for other recorded verdicts.
- Review the evidence and your use of @cursor/sdk@1.0.38 before allowing it. Restrict the permissions described in this report.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
Evidence last updated: .
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