hippo-memory@1.43.2

Biologically-inspired memory system for AI agents. Decay by default, strength through use.

AI Security Review

scanned 14d ago · by lpm-firewall-ai

The package has an install-time path that can restore a previously opted-in Codex wrapper. Its metadata guard and explicit setup flow do not establish unconsented control-surface mutation, but the lifecycle repair remains a concrete integration risk.

Static reason

One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review; previous stored version diff introduced dangerous source

Trigger

Installing the package runs its postinstall hook when Codex wrapper opt-in metadata already exists.

Impact

A previously opted-in Codex launcher integration may be restored automatically during an npm install.

Mechanism

The hook checks for existing wrapper metadata and then ensures the wrapper is installed again; separate explicit CLI setup can write agent hook commands into settings.

AI rationale

Evidence

dist/postinstall.jsdist/hooks.jsdist/cli.js

Decision evidence

public snapshot

AI called this Suspicious at 87.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

package.json runs a postinstall script.
Postinstall repairs a Codex wrapper only when existing metadata records prior opt-in.
The repair path can restore the wrapper during package installation.
Explicit hook setup writes commands into agent settings.

Evidence against

Postinstall does not perform a first-time Codex wrapper install.
Claude Code hooks are installed through an explicit CLI command.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsEvalFilesystemNetworkShell

Supply chain

HighEntropyStringsMinifiedUrlStrings

ManifestNo manifest risk signals triggered.

scanned 246 file(s), 4.78 MB of source, external domains: api.anthropic.com, api.cohere.com, api.github.com, api.openai.com, api.typesafe.ai, api.voyageai.com, github.com, jcgt.org, react.dev, slack.com, www.w3.org

Source & flagged code

9 flagged

package.jsonView file

Lines 15-55json

15 "bin": {

16 "hippo": "bin/hippo.js"

17 },

18 "files": [

19 "dist",

20 "dist-ui",

21 "bin",

22 "scripts/postinstall.cjs",

23 "openclaw.plugin.json",

24 "extensions/openclaw-plugin"

25 ],

26 "scripts": {

27 "baseline": "npm run build && npm test",

28 "build": "tsc && tsc -p tsconfig.benchmarks.json && tsc -p tsconfig.extensions.json",

29 "dev": "tsc --watch",

30 "pretest": "npm run build",

31 "test": "vitest run",

32 "test:watch": "vitest",

33 "lint": "oxlint",

34 "audit:security": "npm audit --audit-level=high && npm --prefix ui audit --audit-level=high",

35 "postinstall": "node scripts/postinstall.cjs",

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L35

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg · L35

36 "smoke:pack": "node scripts/smoke-pack.mjs",

37 "smoke:openclaw-install": "node scripts/smoke-openclaw-install.mjs",

38 "build:ui": "cd ui && npm install && npm run build",

39 "build:all": "npm run build && npm run build:ui",

40 "prepublishOnly": "node scripts/check-manifest-versions.mjs && node scripts/check-em-dashes-in-release-notes.mjs && node scripts/check-graph-writes.mjs && npm run build:all && node scripts/check-openclaw-dist.mjs && npm run smoke:openclaw-install && node scripts/check-tests-pass.mjs"

41 },

42 "keywords": [

43 "memory",

44 "ai",

45 "agents",

46 "llm",

47 "claude",

48 "context",

49 "recall",

50 "episodic",

51 "semantic",

52 "embeddings",

53 "hybrid-search",

54 "agent-memory",

55 "long-term-memory",

dist/embeddings.jsView file

Lines 78-118javascript

78 * official inference code in `FlagEmbedding`); MiniLM and most sentence-

79 * transformers models use mean pooling. Unknown model ids default to mean

80 * — that is the safe choice because most third-party models adopt the

81 * sentence-transformers convention, and the

dist/rerankers/cross-encoder.jsView file

Lines 1-23javascript

1import { createRequire } from 'node:module';

2import { pathToFileURL } from 'node:url';

3const MODEL_NAME = 'Xenova/ms-marco-MiniLM-L-6-v2';

4const _require

dist/hooks.jsView file

•Manifest-trigger-reachable source links an external AI-agent control path to a behavior-bearing write operation. } } } return out; } function [redacted](historypath, startoffsetbytes) { if (!fs.existssync(historypath)) return []; const raw = fs.readfilesync(historypath); if (startoffsetbytes >= raw.length) return []; const delta = raw.subarray(startoffsetbytes).tostring('utf8'); const seen = new set(); const ordered = []; for (const line of delta.split('\n')) { if (!line.trim()) continue; try { const parsed = json.parse(line); const sessionid = parsed.session_id; if (isjsonstring(sessionid) && sessionid && !seen.has(sessionid)) { seen.add(sessionid);

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.

dist/hooks.jsView on unpkg

dist/embedding-provider.js#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 9

High

Semantic Analysis Limited

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

dist/embedding-provider.js#virtual:normalized:round1View on unpkg

dist/predictions.jsView file

•matchType = normalized_sha256 matchedPackage = hippo-memory@1.24.0 matchedPath = dist/predictions.js matchedIdentity = npm:aGlwcG8tbWVtb3J5:1.24.0 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.

dist/predictions.jsView on unpkg

dist/src/predictions.jsView file

High

Known Malware Source Similarity

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

dist/src/predictions.jsView on unpkg

dist/cli.jsView file

•matchType = previous_version_dangerous_delta matchedPackage = hippo-memory@1.40.0 matchedIdentity = npm:aGlwcG8tbWVtb3J5:1.40.0 similarity = 0.917 summary = stored previous version shares package body but lacks this dangerous source file

High

Previous Version Dangerous Delta

This package version adds a dangerous source file absent from the previous stored version; route for source-aware review.

dist/cli.jsView on unpkg

Source & flagged code

9 flagged · loading source

package.jsonView file

•scripts.postinstall = node scripts/postinstall.cjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node scripts/postinstall.cjs

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

dist/embeddings.jsView file

98// Promise<object> names that honestly without claiming a specific module shape. L99: const _dynImport = new Function('s', 'return import(s)'); L100: /**

Low

Eval

Package source references a known benign dynamic code generation pattern.

dist/embeddings.jsView on unpkg · L98

Findings

6 High5 Medium6 Low

HighInstall Time Lifecycle Scriptspackage.json

HighTrigger Reachable External Ai Agent Control Surface Mutationdist/hooks.js

HighSemantic Analysis Limiteddist/embedding-provider.js#virtual:normalized:round1

HighKnown Malware Source Similaritydist/predictions.js

HighKnown Malware Source Similaritydist/src/predictions.js

HighPrevious Version Dangerous Deltadist/cli.js

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumDynamic Requiredist/rerankers/cross-encoder.js

MediumNetwork

MediumEnvironment Vars

MediumStructural Risk Force Deep Review

LowNon Install Lifecycle Scripts

Affected versions and remediation

This report applies to hippo-memory@1.43.2.

See all versions of hippo-memory for other recorded verdicts.

Review the evidence and your use of hippo-memory@1.43.2 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: 2026-10-09 05:44:17.971Z (UTC).

Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Runtime surface

Behavioral surface

Source & flagged code