@mastra/code-sdk@1.10.1
Mastra Code SDK: the agent core behind Mastra Code (everything except the TUI) — build your own UIs and surfaces on top of it
AI Security Review
scanned 1mo ago · by lpm-firewall-aiSource establishes conditional forwarding of an existing service token to a configurable destination without an allowlist. This warrants a warning for dangerous credential exposure, while the inspected behavior does not establish malware intent or justify publication blocking.
Static reason
One or more suspicious static signals were detected.
Trigger
Run an Anthropic OAuth model through gateway routing with a gateway API key and a configured gateway URL.
Impact
The selected gateway receives a service session credential rather than only credentials supplied for that gateway.
Mechanism
The gateway supplies its configured URL to an OAuth fetch wrapper that attaches the stored Anthropic bearer token without restricting the destination.
AI rationale
Source establishes conditional forwarding of an existing service token to a configurable destination without an allowlist. This warrants a warning for dangerous credential exposure, while the inspected behavior does not establish malware intent or justify publication blocking.
Evidence
dist/index.jsdist/agents/model.jsdist/agents/mastracode-gateway.jsdist/providers/claude-max.jsdist/auth/storage.jsauth.json
Network endpoints1
gateway-api.mastra.ai
Decision evidence
public snapshotAI called this Suspicious at 96.0% confidence as Dangerous Capability with low false-positive risk.
Evidence for warning
- The agent entrypoint activates dynamic model resolution.
- Model resolution accepts a gateway URL from settings or MASTRA_GATEWAY_URL without a destination allowlist.
- Gateway forwarding activates when a gateway model is selected and a gateway API key exists.
- The Anthropic OAuth branch connects stored credentials to the configured gateway.
- The OAuth fetch wrapper obtains the Anthropic token, adds a bearer header, and sends it to the supplied URL.
- AuthStorage loads existing credentials from auth.json.
Evidence against
- No npm install lifecycle hooks or runtime self-dependency were found.
- Credential forwarding requires gateway model selection and a gateway API key; no covert default recipient was established.
Behavioral surface
ChildProcessCryptoDynamicRequireEnvironmentVarsEvalFilesystemNetworkShell
HighEntropyStrings
Source & flagged code
3 flaggeddist/plugins/loader.jsView file
117url.searchParams.set("mtimeNs", stat.mtimeNs.toString());
L118: const mod = await import(url.href);
L119: return validatePluginExport(mod.default ?? mod.plugin);
Medium
Dynamic Require
Package source references dynamic require/import behavior.
dist/plugins/loader.jsView on unpkg · L117dist/utils/storage-maintenance.jsView file
1import { getDatabasePath, getVectorDatabasePath } from "./project.js";
L2: import { dirname } from "path";
Medium
Unsafe Vm Context
Package source executes code through a VM context API.
dist/utils/storage-maintenance.jsView on unpkg · L1dist/index.jsView file
Findings
1 High5 Medium6 Low
HighSandbox Evasion Gated Capabilitydist/index.js
MediumDynamic Requiredist/plugins/loader.js
MediumUnsafe Vm Contextdist/utils/storage-maintenance.js
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowScripts Present
LowEval
LowFilesystem
LowHigh Entropy Strings
LowTelemetry
LowUrl Strings
Affected versions and remediation
This report applies to @mastra/code-sdk@1.10.1.
See all versions of @mastra/code-sdk for other recorded verdicts.
- Review the evidence and your use of @mastra/code-sdk@1.10.1 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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