hippo-memory@1.37.0

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

AI Security Review

scanned 14d ago · by lpm-firewall-ai

The install hook conditionally restores a same-vendor Codex wrapper based on existing integration metadata, which is a guarded lifecycle integration that merits a warning. The inspected network code sends embeddings to the selected provider; the source does not establish credential theft or another active attack.

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 when saved Codex wrapper metadata already exists.

Impact

An opted-in Codex command wrapper may be restored during installation.

Mechanism

Postinstall invokes wrapper repair, which checks for existing metadata before ensuring the wrapper under the user's Hippo directory.

AI rationale

Evidence

dist/postinstall.jsdist/hooks.js.hippo/bin.hippo/integrations/codex.json

Decision evidence

public snapshot

AI called this Suspicious at 88.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

The manifest runs a postinstall script when the package is installed.
The postinstall path calls a function that repairs the Codex wrapper only when saved integration metadata exists.
The wrapper repair uses paths under the user's Hippo directory.
The capture helper reads Claude project session files, and the CLI lists agent configuration files for setup detection.
The hook declarations expose an explicit OpenCode plugin install function.
Embedding requests use the configured provider URL and send embedding text with the provider API key.

Evidence against

The postinstall code does not create a new Codex wrapper on first install; it requires existing metadata.
The inspected provider code sends requests to the selected embedding provider endpoint.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsEvalFilesystemNetworkShell

Supply chain

Source & flagged code

11 flagged

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/rerankers/cross-encoder.jsView file

9// isPipelineFactory before it is ever invoked. L10: const _dynImport = new Function('s', 'return import(s)'); L11: const _require = createRequire(import.meta.url);

Low

Eval

Package source references a known benign dynamic code generation pattern.

dist/rerankers/cross-encoder.jsView on unpkg · L9

dist/db.jsView file

8import { deriveOriginProject, originFromSource, isGlobalStoreRoot } from './project-identity.js'; L9: const require = createRequire(import.meta.url); L10: // SAFETY: node:sqlite's DatabaseSync constructor genuinely has this shape at

Medium

Dynamic Require

Package source references dynamic require/import behavior.

dist/db.jsView on unpkg · L8

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 = 8

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/project-identity.jsView file

•matchType = normalized_sha256 matchedPackage = hippo-memory@1.24.0 matchedPath = dist/project-identity.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/project-identity.jsView on unpkg

dist/src/project-identity.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/project-identity.jsView 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 = 0.792 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

11 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/rerankers/cross-encoder.jsView file

9// isPipelineFactory before it is ever invoked. L10: const _dynImport = new Function('s', 'return import(s)'); L11: const _require = createRequire(import.meta.url);

Low

Eval

Package source references a known benign dynamic code generation pattern.

dist/rerankers/cross-encoder.jsView on unpkg · L9

Findings

8 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/project-identity.js

HighKnown Malware Source Similaritydist/src/project-identity.js

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/db.js

MediumNetwork

Medium

Affected versions and remediation

This report applies to hippo-memory@1.37.0.

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

Review the evidence and your use of hippo-memory@1.37.0 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 05:42:52.700Z (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