instar@1.3.1357
Coherence infrastructure for self-evolving AI agents — on the Claude Code or Codex subscription you already have.
AI Security Review
scanned 5d ago · by lpm-firewall-aiSource inspection found automatic first-party hook updates during server migration, a guarded agent-extension lifecycle capability that warrants a warning. The inspected install and credential code did not establish malicious exfiltration or another blocking attack.
Static reason
High-risk behavior combination matched malicious policy.; previous stored version diff introduced dangerous source
Trigger
Starting the Instar server when migration is due.
Impact
The package can update agent hook behavior automatically during migration, without a separate consent prompt at that point.
Mechanism
The server invokes PostUpdateMigrator, which writes executable hook files into the project's Instar hook directory.
AI rationale
Source inspection found automatic first-party hook updates during server migration, a guarded agent-extension lifecycle capability that warrants a warning. The inspected install and credential code did not establish malicious exfiltration or another blocking attack.
Evidence
dist/commands/server.jsdist/core/PostUpdateMigrator.js
Decision evidence
public snapshotAI called this Suspicious at 82.0% confidence as Dangerous Capability with medium false-positive risk.
Evidence for warning
- On server startup, the package runs PostUpdateMigrator against the configured project.
- The migrator writes executable hook files into the Instar hook directory without a consent check at that migration point.
- The package includes commands and helpers that operate on Claude configuration and project hook locations.
- The postinstall hook runs a better-sqlite3 repair script; inspected code downloads its prebuild from the dependency's GitHub releases or rebuilds it.
- Inspected credential helpers read and write credentials through the operating system keychain; no unrelated recipient was established.
Evidence against
- The hook migration is first-party agent setup tied to the package's update flow; the inspected hook is described as blocking free-text credential prompts.
- The observed postinstall network request targets the better-sqlite3 project's release assets for native dependency repair.
- The inspected credential excerpts show local keychain access and storage, not credential transmission.
Behavioral surface
ChildProcess
Source & flagged code
18 flagged · loading sourcepackage.jsonView file
•scripts.postinstall = node scripts/fix-better-sqlite3.cjs
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkgdist/threadline/PipeSessionSpawner.jsView file
15*/
L16: import { execSync } from 'node:child_process';
L17: import fs from 'node:fs';
High
Child Process
Package source references child process execution.
dist/threadline/PipeSessionSpawner.jsView on unpkg · L15352// Spawn tmux session, recording its incarnation (session id + pane pid)
L353: const created = execSync(`tmux new-session -d -P -F '#{session_id} #{pane_pid}' -s "${sessionName}" -x 200 -y 50 'bash -c "${shellCmd.replace(/"/g, '\\"')}"'`, { timeout: 10_000, e...
L354: const [tmuxId, panePid] = created.split(' ');
High
Shell
Package source references shell execution.
Findings
4 Critical11 High6 Medium5 Low
CriticalPersistence Backdoordist/core/GitSync.js
CriticalTrigger Reachable Dangerous Capabilitydist/core/GitSync.js
CriticalTrigger Reachable Excluded Directory Payloaddist/core/PostUpdateMigrator.js
CriticalPrevious Version Dangerous Deltadist/core/PostUpdateMigrator.js
HighInstall Time Lifecycle Scriptspackage.json
HighChild Processdist/threadline/PipeSessionSpawner.js
HighShelldist/threadline/PipeSessionSpawner.js
HighSame File Env Network Executionskills/spec-converge/scripts/publish-spec-review.mjs
HighCredential Redirect Persistencedist/messaging/TelegramAdapter.js
HighSandbox Evasion Gated Capabilitydist/commands/setup.js
Affected versions and remediation
This report applies to instar@1.3.1357.
See all versions of instar for other recorded verdicts.
- Review the evidence and your use of instar@1.3.1357 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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