@melaya/runner@1.1.25
Run Melaya AI pipelines locally with your own LM Studio or Ollama models
AI Security Review
scanned 2mo ago · by lpm-firewall-aiThe package has no install-time execution, but it is an opaque remote-code loader and executor with access to local credentials and browser automation. Static source does not establish covert theft or an install-hook attack, so this is a real unresolved dangerous capability rather than confirmed malware.
Static reason
One or more suspicious static signals were detected.; previous stored version diff introduced dangerous source
Trigger
A user runs melaya-runner with a token and receives a runner:run socket event.
Impact
The Melaya service can replace cached Python modules and run arbitrary Python with the runner process's permissions.
Mechanism
Authenticated remote Python payload download and subprocess execution.
AI rationale
The package has no install-time execution, but it is an opaque remote-code loader and executor with access to local credentials and browser automation. Static source does not establish covert theft or an install-hook attack, so this is a real unresolved dangerous capability rather than confirmed malware.
Evidence
dist/sharedVendor.jsdist/connection.jsdist/detect.js~/.melaya-runner/shared/~/.melaya-runner/shared-version.txt$TMPDIR/melaya-run-<runId>/main.py$TMPDIR/melaya-run-<runId>/config.json~/.claude/.credentials.json~/.codex/auth.json
Network endpoints2
api.melaya.orgapi.anthropic.com
Decision evidence
public snapshotAI called this Suspicious at 94.0% confidence as Dangerous Capability with low false-positive risk.
Evidence for warning
- It downloads a server-supplied Python bundle and writes its files into the user's Melaya cache.
- The bundle's signature is an HMAC derived from the runner token, so the server holding that token can authorize replacement code.
- A socket message supplies Python source that the runner writes to a temporary file and executes.
- Startup reads Claude and Codex authentication files; the Claude token is sent to Anthropic to enumerate models.
Evidence against
- package.json has only a prepublish hook, not an install-time lifecycle hook.
- The executable requires a user-supplied runner token and explicitly connects to a configured Melaya server.
- The browser component includes request filtering that blocks private and cloud-metadata addresses.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetworkShellWebSocket
HighEntropyStrings
Source & flagged code
8 flaggeddist/codeWorker.jsView file
51// model (--experimental-permission / --permission): fs read/write
L52: // limited to the scratch dir, child_process and worker_threads denied.
L53: //
High
Child Process
Package source references child process execution.
dist/codeWorker.jsView on unpkg · L51288// ulimit -t: hard CPU time in seconds.
L289: // We use /bin/sh -c "ulimit ...; exec sandbox-exec ..." so both limits
L290: // apply before the Node process starts. This is a soft-then-hard pair;
High
dist/browserProvisioner.jsView file
•matchType = previous_version_dangerous_delta
matchedPackage = @melaya/runner@1.0.93
matchedIdentity = npm:QG1lbGF5YS9ydW5uZXI:1.0.93
similarity = 0.769
summary = stored previous version shares package body but lacks this dangerous source file
Findings
1 Critical6 High4 Medium6 Low
CriticalPrevious Version Dangerous Deltadist/browserProvisioner.js
HighChild Processdist/codeWorker.js
HighShelldist/codeWorker.js
HighSandbox Evasion Gated Capabilitydist/browserProvisioner.js
HighCloud Metadata Accessdist/browserAuthz.js
HighRuntime Package Installdist/lumaLogin.js
HighSemantic Analysis Limiteddist/linkedinLogin.js#virtual:normalized:round1
MediumNetwork
MediumEnvironment Vars
MediumShips Build Helperdist/localRagIngest.py
MediumStructural Risk Force Deep Review
LowNon Install Lifecycle Scripts
LowScripts Present
Affected versions and remediation
This report applies to @melaya/runner@1.1.25.
See all versions of @melaya/runner for other recorded verdicts.
- Review the evidence and your use of @melaya/runner@1.1.25 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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