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mandrel: AI-agent control-surface risk | LPM Firewall

registry / mandrel / 2.75.0

mandrel@2.75.0

Claude Code-first opinionated workflow framework: instructions, skills, rules, and SDLC workflows that govern AI coding assistants.

AI Security Review

scanned 6d ago · by lpm-firewall-ai

LPM flags this version as an AI-agent control-surface risk. Installation automatically replaces and prunes the consumer project’s broad .agents control surface. The synchronization does not require consent or restrict replacement and deletion to previously owned files.

Static reason

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

Trigger

npm installation with lifecycle scripts enabled outside the package’s source checkout.

Impact

Existing agent instructions, skills, rules, and workflows can be replaced or removed by installing the dependency.

Mechanism

The postinstall hook calls synchronization using INIT_CWD; synchronization copies package files over the consumer’s .agents files and deletes unmatched destination files.

Policy narrative

The published postinstall hook invokes synchronization directly in the consumer project. Synchronization treats most of the existing .agents tree as managed content, overwrites matching files, and removes files missing from its payload. Limited exclusions preserve local overrides but do not establish ownership of the remaining files. This permits unconsented installation-time replacement of a broad agent control surface.

AI rationale

Inspected source establishes automatic, unconsented mutation of the consumer’s broad agent control surface, meeting the blocking policy. The verdict rests on the lifecycle caller and overwrite/delete operations, not scanner similarity labels.

Evidence

package.jsonbin/postinstall.jslib/cli/sync.js.agents

Decision evidence

Source & flagged code

9 flagged · loading source

package.jsonView file

•scripts.postinstall = node bin/postinstall.js mandrel sync

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node bin/postinstall.js mandrel sync

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

.agents/scripts/lib/qa/redact-evidence.jsView file

17patternName = generic_password severity = medium line = 17

Medium

Secret Pattern

Package contains a possible secret pattern.

.agents/scripts/lib/qa/redact-evidence.jsView on unpkg · L17

bin/mandrel.jsView file

101function installedVersion() { L102: const req = createRequire(import.meta.url); L103: const manifest = req('../package.json');

Medium

Dynamic Require

Package source references dynamic require/import behavior.

bin/mandrel.jsView on unpkg · L101

bin/postinstall.jsView file

1Install-time AI-agent control hijack evidence: Install-time helper chain writes an AI-agent control surface: L1: #!/usr/bin/env node L2: // bin/postinstall.js — best-effort `.agents/` materializer on install. L3: ... L7: * doctor-detected "not materialized" state instead of failing the install. L8: * In the framework's own source checkout it no-ops, since `.agents/` there is L9: * the committed product and a sync would clobber it. ... L19: const HINT = L20: 'mandrel: could not materialize ./.agents/ during install — run `mandrel sync` to finish setup.\n'; L21: Referenced control path from bin/postinstall.js: L1: #!/usr/bin/env node L2: // bin/postinstall.js — best-effort `.agents/` materializer on install. L3: ... L7: * doctor-detected "not materialized" state instead of failing the ins

Critical

Ai Agent Control Hijack

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

bin/postinstall.jsView on unpkg · L1

lib/cli/init.js#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 2

High

Semantic Analysis Limited

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

lib/cli/init.js#virtual:normalized:round1View on unpkg

lib/cli/registry.jsView file

•matchType = normalized_sha256 matchedPackage = mandrel@2.74.0 matchedPath = lib/cli/registry.js matchedIdentity = npm:bWFuZHJlbA:2.74.0 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.

lib/cli/registry.jsView on unpkg

•matchType = malicious_source_fingerprint_signature signature = f0b15f9b8ea7506f signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = mandrel@2.74.0 matchedPath = lib/cli/registry.js matchedIdentity = npm:bWFuZHJlbA:2.74.0 similarity = 1.000 shingleOverlap = 21 summary = package final verdict is malicious

High

Known Malware Source Fingerprint Signature

Source fingerprint signature matches a known malicious package signature; route for source-aware review.

lib/cli/registry.jsView on unpkg

lib/cli/update.jsView file

•matchType = normalized_sha256 matchedPackage = mandrel@2.74.0 matchedPath = lib/cli/update.js matchedIdentity = npm:bWFuZHJlbA:2.74.0 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.

lib/cli/update.jsView on unpkg

Source & flagged code

9 flagged

package.jsonView file

Lines 51-91json

51 "cyclomatic:update": "node .agents/scripts/check-cyclomatic.js --update",

52 "dead-exports:update": "node scripts/update-dead-exports-baseline.js && node scripts/update-dead-exports-baseline.js --production",

53 "check:knip-entries": "node scripts/check-knip-entries.js",

54 "validator:gen": "node scripts/check-generated-validator.js",

55 "validator:check": "node scripts/check-generated-validator.js --check",

56 "config:ceiling": "node scripts/check-agentrc-key-ceiling.js",

57 "check:comment-policy": "node scripts/check-comment-policy.js",

58 "check:schema-refs": "node scripts/check-schema-references.js",

59 "check:workflow-citations": "node scripts/check-workflow-citations.js",

60 "crap:check": "node .agents/scripts/check-baselines.js --gate crap",

61 "crap:update": "node .agents/scripts/update-crap-baseline.js",

62 "crap:reanchor": "node .agents/scripts/update-crap-baseline.js --full-scope",

63 "duplication:check": "node .agents/scripts/check-baselines.js --gate duplication",

64 "duplication:update": "node .agents/scripts/update-duplication-baseline.js",

65 "duplication:reanchor": "node .agents/scripts/update-duplication-baseline.js --full-scope",

66 "quality:preview": "node .agents/scripts/check-dead-exports.js && node .agents/scripts/quality-preview.js",

67 "quality:watch": "node .agents/scripts/quality-watch.js",

68 "sync:commands": "node bin/mandrel.js sync-commands",

69 "sync:agents": "node .agents/scripts/sync-claude-agents.js",

70 "prepare": "husky && npm run sync:commands && npm run sync:agents && npm run baselines:merge-driver",

71 "postinstall": "node bin/postinstall.js mandrel sync"

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L71

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg · L71

72 },

73 "repository": {

74 "type": "git",

75 "url": "git+https://github.com/dsj1984/mandrel.git"

76 },

77 "keywords": [

78 "claude-code",

79 "ai-agents",

80 "sdlc",

81 "workflow",

82 "orchestration",

83 "agentic"

84 ],

85 "author": "",

86 "license": "MIT",

87 "bin": {

88 "mandrel": "bin/mandrel.js"

89 },

90 "type": "module",

91 "bugs": {

.agents/scripts/lib/qa/redact-evidence.jsView file

Lines 1-37javascript

1/**

2 * redact-evidence.js — deterministic secrets/PII scrubber run before QA

3 * evidence is persisted or posted (security baseline § Data Leakage).

4 * Idempotent (placeholders match no rule) and pass-through for benign text.

5 */

6

7/**

8 * Per-rule placeholders, free of anything a pattern matches (`@`, `=`, long

9 * token or digit runs) so the pass is a fixed point.

10 *

11 *

bin/mandrel.jsView file

Lines 81-121javascript

81 ],

82 [

83 'explain',

84 {

85 description: 'print resolved config values and their sources',

86 knownFlags: new Set(['--json']),

87 },

88 ],

bin/postinstall.jsView file

Lines 1-21javascript

1#!/usr/bin/env node

2// bin/postinstall.js — best-effort `.agents/` materializer on install.

3

4/**

5 * Runs `mandrel sync` on install. Best-effort by contract: always exits 0 so

6 * `--ignore-scripts`, sandboxed CI, or a copy error degrade to the

7 * doctor-detected "not materialized" state instead of failing the install.

8 * In the framework's own source checkout it no-ops, since `.agents/` there is

9 * the committed product and a sync would clobber it.

10 */

11

lib/cli/init.js#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 2

High

Semantic Analysis Limited

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

lib/cli/init.js#virtual:normalized:round1View on unpkg

lib/cli/registry.jsView file

•matchType = normalized_sha256 matchedPackage = mandrel@2.74.0 matchedPath = lib/cli/registry.js matchedIdentity = npm:bWFuZHJlbA:2.74.0 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.

lib/cli/registry.jsView on unpkg

•matchType = malicious_source_fingerprint_signature signature = f0b15f9b8ea7506f signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = mandrel@2.74.0 matchedPath = lib/cli/registry.js matchedIdentity = npm:bWFuZHJlbA:2.74.0 similarity = 1.000 shingleOverlap = 21 summary = package final verdict is malicious

High

Known Malware Source Fingerprint Signature

Source fingerprint signature matches a known malicious package signature; route for source-aware review.

lib/cli/registry.jsView on unpkg

lib/cli/update.jsView file

•matchType = normalized_sha256 matchedPackage = mandrel@2.74.0 matchedPath = lib/cli/update.js matchedIdentity = npm:bWFuZHJlbA:2.74.0 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.

lib/cli/update.jsView on unpkg