spacecode@2.17.2
SpaceCode - launch cloud dev environments with AI coding agents
AI Security Review
scanned 9h ago · by lpm-firewall-aiThe package automatically forwards an Anthropic API key to its default SpaceCode backend during ordinary local REPL startup. This is concrete credential disclosure to a package-selected recipient.
Static reason
One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review; source fingerprint signature matched known malicious package; routed for review
Trigger
Start the spacecode CLI without a cloud target while ANTHROPIC_API_KEY is set.
Impact
The Anthropic credential is disclosed to the SpaceCode backend without recipient-specific consent.
Mechanism
The REPL treats ANTHROPIC_API_KEY as its API key and sends it in authentication headers to the backend prompt endpoint.
Attack narrative
Starting the CLI without a cloud target launches the local REPL. When ANTHROPIC_API_KEY is present, the REPL selects it as its API key and automatically sends it to backend.spacecode.app while fetching prompts. This exposes an Anthropic credential to a different service without recipient-specific consent.
AI rationale
The package automatically forwards an Anthropic API key to its default SpaceCode backend during ordinary local REPL startup. This is concrete credential disclosure to a package-selected recipient.
Evidence
package.jsondist/index.jsdist/repl.mjs
Network endpoints1
backend.spacecode.app/api/prompts
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- The package exposes dist/index.js as the spacecode CLI, and its default invocation starts the local REPL.
- The REPL accepts ANTHROPIC_API_KEY as an API key, then sends that key in Authorization and x-api-key headers when fetching prompts.
- The prompt fetch runs automatically when the REPL mounts and targets the default backend at backend.spacecode.app.
Evidence against
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetworkShell
HighEntropyStringsUrlStrings
Oversized source lightweight scan
dist/repl.mjs4.43 MB file, sampled 256 KB
Source & flagged code
12 flagged · loading sourcedist/index.jsView file
1122try {
L1123: const execAsync = (0, import_util.promisify)(import_child_process.exec);
L1124: const options = {};
High
1122try {
L1123: const execAsync = (0, import_util.promisify)(import_child_process.exec);
L1124: const options = {};
High
•Manifest-reachable source captures an API credential, sends it to a fixed unofficial gateway, and persists that redirection in agent or shell configuration.
dist/index.js:
baseUrl;
constructor(baseUrl, token) {
this.baseUrl = baseUrl ?? process.env.SPACECODE_API_URL ?? DEFAULT_API_URL;
const url = `${this.baseUrl}${path6}`;
headers["Authorization"] = `Bearer ${this.token}`;
throw new AuthError("Authentication failed. Please check your API key or run a command to re-authenticate");
const response = await fetch(`${this.baseUrl}/health`, {
const url = `${this.baseUrl}/api/auth/exchange`;
High
Credential Redirect Persistence
Manifest-reachable source sends a prompted API credential to a fixed unofficial gateway and persists the redirection.
dist/index.jsFindings
9 High5 Medium4 Low
HighChild Processdist/index.js
HighShelldist/index.js
HighCredential Redirect Persistencedist/index.js
HighRemote Agent Bridgedist/index.js
HighCross File Remote Execution Contextdist/index.js
HighKnown Malware Source Similaritydist/index.js
HighKnown Malware Source Similaritydist/repl.mjs
HighKnown Malware Source Similaritydist/mcp/index.js
HighKnown Malware Source Fingerprint Signaturedist/index.js
MediumNetwork
MediumEnvironment Vars
MediumOversized Source Filedist/repl.mjs
MediumOversized Cli Entrypointdist/repl.mjs
Affected versions and remediation
This report applies to spacecode@2.17.2.
See all versions of spacecode for other recorded verdicts.
- Avoid installing spacecode@2.17.2. Remove it from direct dependencies and check your lockfile for transitive copies.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
- If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.
Evidence last updated: .
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