@sentropic/h2a-runtime@0.93.1
h2a heavy runtime (sessions / k8s / tunnel, node-pty + aws-sdk). Lazily imported by @sentropic/h2a; installed separately.
AI Security Review
scanned 3mo ago · by lpm-firewall-aiThis is not concrete malicious behavior, but it provides high-impact explicit agent-extension and shell-install capability. Flag as warn for downstream policy visibility.
Static reason
One or more suspicious static signals were detected.; previous stored version diff introduced dangerous source
Trigger
User runs h2a plugin add/sync or h2a enroll --install-hooks.
Impact
Selected MCP/plugin code can execute in configured local or remote agent environments.
Mechanism
Explicit CLI-managed agent-extension installation and configuration.
AI rationale
This is not concrete malicious behavior, but it provides high-impact explicit agent-extension and shell-install capability. Flag as warn for downstream policy visibility.
Evidence
package.jsondist/index.jsdist/plugin.jsdist/llm-mesh.jsdist/config.js~/.claude.json~/.claude/settings.json~/.codex/config.toml~/.gemini/config/mcp_config.json~/.sentropic/remote.json
Network endpoints1
localhost:3002
Decision evidence
public snapshotAI called this Suspicious at 91.0% confidence as Dangerous Capability with low false-positive risk.
Evidence for warning
- dist/plugin.js: plugin add installs user-specified packages and registers MCP entries.
- dist/plugin.js: plugin sync can run user-configured curl|bash or shell installers in session Pods.
- dist/plugin.js writes MCP config for Claude, Codex, and Gemini/agy.
- dist/index.js: enroll --install-hooks explicitly writes Claude SessionStart/SessionEnd hooks.
Evidence against
- package.json has no preinstall, install, postinstall, or bin lifecycle hook.
- dist/index.js executes main only when run directly; imports are guarded.
- AI-agent configuration changes require explicit plugin/enroll CLI commands.
- dist/llm-mesh.js uses localhost for its gateway; no fixed external credential endpoint is present.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetworkShell
HighEntropyStringsUrlStrings
Source & flagged code
4 flaggeddist/index.jsView file
•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:
import { existsSync, mkdirSync, readdirSync, readFileSync, realpathSync, statSync, writeFileSync, } from "node:fs";
import { createInterface } from "node:readline";
baseUrl: opts.remote,
async function refreshProfileSession(baseUrl, sessionId, opts) {
const remoteProfile = (await getRemoteSession(baseUrl, sessionId)).session
const response = await refreshRemoteSession(baseUrl, sessionId, credentials, fetch, opts.name);
async function pushAllProfiles(baseUrl, sessionId, opts) {
process.stderr.write(`[h2a] sending creds for ${sent.join(", ")} to ${baseUrl}/sessions/${sessionId}: ${Object.keys(merged).join(", ")}\n`);
High
Credential Redirect Persistence
Manifest-reachable source sends a prompted API credential to a fixed unofficial gateway and persists the redirection.
dist/index.jsView on unpkgdist/pty.jsView file
76package = @sentropic/h2a-runtime; repositoryIdentity = h2a; dependency = node-pty
L76: try {
L77: require("node-pty");
L78: }
High
Copied Package Dependency Bridge
Package metadata claims a different repository identity while copied source loads a runtime dependency bridge.
Findings
4 High3 Medium3 Low
HighCredential Redirect Persistencedist/index.js
HighCopied Package Dependency Bridgedist/pty.js
HighExternal Ai Agent Control Surface Mutationdist/plugin.js
HighPrevious Version Dangerous Deltadist/llm-mesh.js
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Affected versions and remediation
This report applies to @sentropic/h2a-runtime@0.93.1.
See all versions of @sentropic/h2a-runtime for other recorded verdicts.
- Review the evidence and your use of @sentropic/h2a-runtime@0.93.1 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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