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devcodex@1.20.0: AI-agent control-surface risk | LPM Firewall

registry / devcodex / 1.20.0

devcodex@1.20.0

DevCodex — cross-host AI coding engineering harness for Codex, Claude Code, GitHub Copilot, Gemini CLI, Grok, and Cursor

AI Security Review

scanned 1mo ago · by lpm-firewall-ai

LPM flags this version as an AI-agent control-surface risk. A global npm install automatically modifies user-level configuration for multiple AI coding agents and installs a trusted Grok plugin. This is a broad AI-agent control-surface change.

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review

Trigger

Installing devcodex globally through npm.

Impact

It can change instructions, hooks, MCP settings, and plugin state for Codex, Claude, Copilot, Gemini, Grok, and Cursor.

Mechanism

Postinstall applies cross-host adapters and installs a trusted plugin.

Policy narrative

On global npm installation, postinstall calls the lifecycle adapter. That adapter executes a global host configuration operation rather than requiring an explicit setup command. The configuration code targets six AI-agent home directories and writes agent instructions, hooks, MCP settings, and configuration. It also invokes the Grok CLI to install the package plugin with trust enabled. This creates an unconsented, broad persistent control surface across unrelated agent applications.

AI rationale

The automatic global lifecycle path mutates broad AI-agent configuration and enables a trusted plugin. The workspace guard does not mitigate the automatic global-install behavior.

Evidence

package.jsonscripts/postinstall.jsscripts/lib/npm-lifecycle-adapter.jsscripts/lib/global-host-target.jsscripts/lib/host-adapter-scope.js.copilot.claude.codex/AGENTS.md.codex/hooks.json

Source & flagged code

19 flagged · loading source

package.jsonView file

•scripts.postinstall = node scripts/postinstall.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node scripts/postinstall.js

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

index.jsView file

•matchType = normalized_sha256 matchedPackage = devcodex@1.19.5 matchedPath = index.js matchedIdentity = npm:ZGV2Y29kZXg:1.19.5 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

index.jsView on unpkg

8L9: const fs = require('fs') L10: const os = require('os')

Medium

Dynamic Require

Package source references dynamic require/import behavior.

index.jsView on unpkg · L8

scripts/test-task-admission-authority.jsView file

65} L66: const KEEP_TEST_ARTIFACTS = process.env.DEVCODEX_KEEP_TEST_ARTIFACTS === '1' L67: const TEST_RUNTIME = { ... L79: fs.mkdirSync(path.join(activeRoot, 'profile'), { recursive: true }) L80: fs.writeFileSync(path.join(physicalRoot, 'package.json'), '{}\n') L81: return { physicalRoot, activeRoot, project: name } ... L628: assert.strictEqual(recovery.status, 'fresh') L629: const legacyState = JSON.parse(JSON.stringify(recovery.state)) L630: delete legacyState.taskRecoveryCommitFence ... L2756: fs.mkdirSync(path.join(reparseRoot.activeRoot, 'bugs'), { recursive: true }) L2757: fs.symlinkSync(outside, path.join(reparseRoot.activeRoot, 'bugs', '任务-reparse'), process.platform === 'win32' ? 'junction' : 'dir') L2758: const reparseInput = admissionInput(reparseRoot, 'reparse')

Low

Weak Crypto

Package source references weak cryptographic algorithms.

scripts/test-task-admission-authority.jsView on unpkg · L65

scripts/lib/devcodex-readiness.jsView file

1Install-time code directly mutates a foreign AI-agent control surface: L62: const env = options.env || process.env L63: const sessionId = String(env.CODEX_THREAD_ID || '').trim() L64: if (!sessionId) return null ... L179: } L180: fsImpl.mkdirSync(directory, { recursive: true }) L181: const unsafeAfter = unsafePathComponent(sharedRoot, file, fsImpl) ... L198: } L199: fsImpl.writeFileSync(temporary, `${JSON.stringify(payload, null, 2)}\n`, { encoding: 'utf8', flag: 'wx', mode: 0o600 }) L200: fsImpl.renameSync(temporary, file) ... L334: facts.globalLifecycleFilesPresent.status === 'BLOCK' || L335: facts.codexAdapterContractReady.status === 'BLOCK' || L336: facts.managedConfigDrift.status === 'BLOCK') { Write operation from scripts/lib/devcodex-readiness.js: L62: const env = options.env || pro

Critical

Ai Agent Control Hijack

Source creates an unconsented AI-agent control surface through install-time mutation or a default unauthenticated remote skill channel.

scripts/lib/devcodex-readiness.jsView on unpkg · L1

scripts/lib/cli-maintenance-commands.jsView file

•Manifest-trigger-reachable source links an external AI-agent control path to a behavior-bearing write operation. const current = fs.readfilesync(item.dest, 'utf8') fs.writefilesync(item.dest, updateprofiletierdeclaration(current, tier), 'utf8') continue } if (item.action === 'backup-and-generate') { const bak = `${item.dest}.bak.${backupid}` fs.copyfilesync(item.dest, bak) backedup++ } fs.writefilesync(item.dest, generators[item.file](), 'utf-8') } } log() const plannedtierupdates = actions.filter(item => item.action === 'update-tier').length log(` ${options.dryrun ? 'planned generate' : 'generated'}: ${generated} skipped: ${skipped} tier updates: ${plannedtierupdates} backed up: ${

High

Trigger Reachable External Ai Agent Control Surface Mutation

Manifest-trigger-reachable source writes behavior-bearing configuration into a user or project AI-agent control surface.

scripts/lib/cli-maintenance-commands.jsView on unpkg

hooks/_runtime/lifecycle-turn-liveness.cjs#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 11

High

Semantic Analysis Limited

A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.

hooks/_runtime/lifecycle-turn-liveness.cjs#virtual:normalized:round1View on unpkg

scripts/probe-skill-route-s15-host.jsView file

•matchType = normalized_sha256 matchedPackage = devcodex@1.19.5 matchedPath = scripts/probe-sk[redacted] matchedIdentity = npm:ZGV2Y29kZXg:1.19.5 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

scripts/probe-skill-route-s15-host.jsView on unpkg

scripts/test-host-adapters.jsView file

•matchType = normalized_sha256 matchedPackage = devcodex@1.19.5 matchedPath = scripts/test-host-adapters.js matchedIdentity = npm:ZGV2Y29kZXg:1.19.5 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

scripts/test-host-adapters.jsView on unpkg

grok/plugins/devcodex-workspace/hooks/devcodex-workspace.cjsView file

•matchType = normalized_sha256 matchedPackage = devcodex@1.19.5 matchedPath = grok/plugins/devcodex-workspace/hooks/devcodex-workspace.cjs matchedIdentity = npm:ZGV2Y29kZXg:1.19.5 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

grok/plugins/devcodex-workspace/hooks/devcodex-workspace.cjsView on unpkg

scripts/lib/node-runtime-readiness.jsView file

•matchType = normalized_sha256 matchedPackage = devcodex@1.19.5 matchedPath = scripts/lib/node-runtime-readiness.js matchedIdentity = npm:ZGV2Y29kZXg:1.19.5 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

scripts/lib/node-runtime-readiness.jsView on unpkg

scripts/test-derived-state-lock-concurrency.jsView file

•matchType = normalized_sha256 matchedPackage = devcodex@1.19.5 matchedPath = scripts/test-derived-state-lock-concurrency.js matchedIdentity = npm:ZGV2Y29kZXg:1.19.5 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

scripts/test-derived-state-lock-concurrency.jsView on unpkg

scripts/test-security-audit.jsView file

•matchType = normalized_sha256 matchedPackage = devcodex@1.19.5 matchedPath = scripts/test-security-audit.js matchedIdentity = npm:ZGV2Y29kZXg:1.19.5 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

scripts/test-security-audit.jsView on unpkg

grok/plugins/devcodex-workspace/mcp/workspace-bridge.cjsView file

•matchType = normalized_sha256 matchedPackage = devcodex@1.19.5 matchedPath = grok/plugins/devcodex-workspace/mcp/workspace-bridge.cjs matchedIdentity = npm:ZGV2Y29kZXg:1.19.5 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

grok/plugins/devcodex-workspace/mcp/workspace-bridge.cjsView on unpkg

scripts/instruction-fallback-check.jsView file

•matchType = normalized_sha256 matchedPackage = devcodex@1.19.5 matchedPath = scripts/instruction-fallback-check.js matchedIdentity = npm:ZGV2Y29kZXg:1.19.5 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

scripts/instruction-fallback-check.jsView on unpkg

scripts/test-host-capability-routing.jsView file

•matchType = normalized_sha256 matchedPackage = devcodex@1.19.5 matchedPath = scripts/test-host-capability-routing.js matchedIdentity = npm:ZGV2Y29kZXg:1.19.5 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

scripts/test-host-capability-routing.jsView on unpkg

hooks/_runtime/mutation-footprint.cjsView file

•matchType = normalized_sha256 matchedPackage = devcodex@1.19.5 matchedPath = hooks/_runtime/mutation-footprint.cjs matchedIdentity = npm:ZGV2Y29kZXg:1.19.5 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

hooks/_runtime/mutation-footprint.cjsView on unpkg

mcp/artifact-link-projection.cjsView file

•matchType = normalized_sha256 matchedPackage = devcodex@1.19.5 matchedPath = mcp/artifact-link-projection.cjs matchedIdentity = npm:ZGV2Y29kZXg:1.19.5 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

mcp/artifact-link-projection.cjsView on unpkg