registry / @getstackrun/sdk / 1.2.0
@getstackrun/sdk@1.2.0
Official JavaScript/TypeScript SDK for STACK - the runtime control plane for AI agents
AI Security Review
scanned 3d ago · by lpm-firewall-aiThe flagged subprocess behavior is limited to opening the browser during authentication or agent enrollment. Credential refresh and enrollment requests go to the configured STACK API, and the inspected source does not execute commands or forward command output.
Static reason
One or more suspicious static signals were detected.; previous stored version diff introduced dangerous source
Trigger
API requests made through the SDK; interactive browser authentication or agent enrollment occurs when needed.
Impact
No malicious impact identified. Runtime credential files include ~/.stack/credentials.json and ~/.stack/agents/<agent_id>.json.
Mechanism
Uses STACK credentials with the configured API base URL and opens the browser for authentication or enrollment. No command-output exfiltration behavior was identified.
AI rationale
The flagged subprocess behavior is limited to opening the browser during authentication or agent enrollment. Credential refresh and enrollment requests go to the configured STACK API, and the inspected source does not execute commands or forward command output.
Evidence
~/.stack/credentials.json~/.stack/agents/<agent_id>.json
Network endpoints6
api.getstack.run/oauth/tokenapi.getstack.run/oauth/registerapi.getstack.run/oauth/authorizeapi.getstack.run/v1/agents/{agentId}/enrollment-challengeapi.getstack.run/v1/agents/{agentId}/enrollgetstack.run/sdk-bootstrap
Decision evidence
public snapshotAI called this Clean at 97.0% confidence as Benign with low false-positive risk.
Evidence for AI clean decision
- The package exports its SDK entrypoint from dist/index.js; the only lifecycle script is prepublishOnly, which runs clean and build.
- The Stack constructor creates an HTTP client and service objects; this is the SDK’s expected entrypoint behavior.
- Refresh-token exchange sends the stored STACK refresh token to the configured API base URL’s /oauth/token endpoint.
- Agent enrollment sends a challenge response and public key to the configured STACK API; the private key is stored locally.
- The interactive enrollment flow opens the STACK dashboard and includes the agent ID, machine name, and process label in the enrollment URL.
Evidence against
- The package uses child_process, but the inspected calls only open a browser for authentication or enrollment.
- The SDK reads local STACK credentials, but the inspected refresh flow sends them to the configured STACK API.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
5 flaggeddist/browser-bootstrap.jsView file
•matchType = previous_version_dangerous_delta
matchedPackage = @getstackrun/sdk@0.17.0
matchedIdentity = npm:QGdldHN0YWNrcnVuL3Nkaw:0.17.0
similarity = 0.361
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/browser-bootstrap.jsView on unpkg181async function openBrowser(url) {
L182: const { spawn } = await import('node:child_process');
L183: try {
High
Child Process
Package source references child process execution.
dist/browser-bootstrap.jsView on unpkg · L181dist/agent-auth.js#virtual:normalized:round1View file
73* Spawn a one-shot loopback HTTP server on a random free port, open
L74: * the dashboard /sdk-bootstrap page in the user"s browser, and resolve\n * with the enrollment ticket once the user approves (or reject on\n * deny / timeout). Used as the interact...
L75: * (or sk_live_* via STACK_API_KEY). No browser, no human-in-the-
Findings
1 Critical4 High2 Medium5 Low
CriticalPrevious Version Dangerous Deltadist/browser-bootstrap.js
HighChild Processdist/browser-bootstrap.js
HighCommand Output Exfiltrationdist/agent-auth.js#virtual:normalized:round1
HighTrigger Reachable Command Output Exfiltrationdist/agent-auth.js#virtual:normalized:round1
HighSemantic Analysis Limiteddist/agent-auth.js#virtual:normalized:round1
MediumNetwork
MediumEnvironment Vars
LowNon Install Lifecycle Scripts
LowScripts Present
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Affected versions and remediation
This report applies to @getstackrun/sdk@1.2.0.
See all versions of @getstackrun/sdk for other recorded verdicts.
- Review the evidence and your use of @getstackrun/sdk@1.2.0 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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