@taurgis/bonsai@4.1.1
Bonsai is a standalone local research cache CLI for AI agents
AI Security Review
scanned 6d ago · by lpm-firewall-aiThe default postinstall delegates execution to an external command whose behavior is not present in this package, creating unresolved installation-time risk. The inspected browser and fetch code supports the package's stated URL research function and does not establish a separate attack.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Installing the package when CI and FORWARD_NEXUS_SKIP_SYNC are unset.
Impact
An external executable can run during installation; its behavior and any changes it makes cannot be established from this package source.
Mechanism
The postinstall command invokes npx to run forward-nexus sync --pull.
AI rationale
The default postinstall delegates execution to an external command whose behavior is not present in this package, creating unresolved installation-time risk. The inspected browser and fetch code supports the package's stated URL research function and does not establish a separate attack.
Evidence
package.json
Decision evidence
public snapshotAI called this Suspicious at 90.0% confidence as Dangerous Capability with medium false-positive risk.
Evidence for warning
- package.json runs an install hook that invokes `npx forward-nexus sync --pull` unless CI or a skip variable is set.
- forward-nexus is absent from the declared dependencies, and its implementation is not included in the inspected package source.
- The browser code uses shell lookup to find a local Chrome executable, then starts Chrome for rendered fetching.
- The fetch service processes normalized URL targets, and the Salesforce mirror uses fixed hosts.
Evidence against
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetworkShellWebSocket
HighEntropyStringsUrlStrings
NoLicense
Source & flagged code
7 flagged · loading sourcepackage.jsonView file
•scripts.postinstall = node -e "if (process.env.CI || process.env.FORWARD_NEXUS_SKIP_SYNC) { console.log('Skipping forward-nexus sync.'); process.exit(0); } require('node:child_process').execFileSync('np...
Critical
Red Install Lifecycle Script
Install-time lifecycle script matches a deterministic static-gate block pattern.
package.jsonView on unpkg•scripts.postinstall = node -e "if (process.env.CI || process.env.FORWARD_NEXUS_SKIP_SYNC) { console.log('Skipping forward-nexus sync.'); process.exit(0); } require('node:child_process').execFileSync('np...
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkgdist/lib/research/browser.jsView file
1import { spawn } from 'node:child_process';
L2: import { existsSync } from 'node:fs';
High
Child Process
Package source references child process execution.
Findings
1 Critical6 High4 Medium5 Low
CriticalRed Install Lifecycle Scriptpackage.json
HighInstall Time Lifecycle Scriptspackage.json
HighChild Processdist/lib/research/browser.js
HighShell
HighRuntime Package Installpackage.json#scripts.postinstall
HighSemantic Analysis Limiteddist/lib/research/fetch-command-service.js#virtual:normalized:round1
HighKnown Malware Source Similaritydist/sites/salesforce/help-tooling-markdown.js
MediumNetwork
MediumEnvironment Vars
MediumShips Build Helperagents/hooks/claude-code/hooks/bonsai-web-fetch.sh
MediumStructural Risk Force Deep Review
LowScripts Present
Low
Affected versions and remediation
This report applies to @taurgis/bonsai@4.1.1.
See all versions of @taurgis/bonsai for other recorded verdicts.
- Review the evidence and your use of @taurgis/bonsai@4.1.1 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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