@tigrisdata/cli@3.16.0

Command line interface for Tigris object storage

AI Security Review

scanned 9d ago · by lpm-firewall-ai

The postinstall hook makes a global Claude skills directory change without an affirmative setup step, so this qualifies as first-party package-owned agent extension setup. The copied content is Tigris storage guidance, and the inspected browser credential flow does not establish an unrelated recipient.

Static reason

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

Trigger

Installing the package as a dependency on a system with an existing Claude configuration directory.

Impact

The Tigris guidance becomes available to Claude Code in future sessions.

Mechanism

The hook copies the package's SKILL.md into the global Claude skills directory.

AI rationale

Evidence

package.jsonpostinstall.cjsSKILL.md~/.claude/skills/tigris/SKILL.md

Decision evidence

public snapshot

AI called this Suspicious at 84.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

The manifest runs postinstall.cjs during installation.
The hook runs for dependency installs and copies the package's SKILL.md into the user's global Claude skills directory when that directory exists.
The copied skill describes Tigris object storage usage and is marked non-user-invocable.
The browser credential flow prompts for credentials and uses the configured or default endpoint when saving them.

Evidence against

Behavioral surface

Source

ChildProcessDynamicRequireEnvironmentVarsEvalFilesystemNetworkShell

Supply chain

HighEntropyStringsMinifiedPossibleObfuscationUrlStrings

ManifestNo manifest risk signals triggered.

scanned 168 file(s), 1.35 MB of source, external domains: aws.amazon.com, community.tigrisdata.com, console.storage.dev, custom.endpoint.dev, example.com, fly.io, get.t3.storage.dev, github.com, iam.storageapi.dev, mcp.storage.dev, mgmt.storageapi.dev, ph.tigrisdata.com, pkg.go.dev, react-native.canny.io, registry.npmjs.org, s3-fips.dualstack, s3-fips.dualstack.us-east-1, s3-fips.us-east-1, s3.amazonaws.com, s3.dualstack, s3.dualstack.us-east-1, t3.storage.dev, www.tigrisdata.com, www.w3.org

Source & flagged code

8 flagged

package.jsonView file

•scripts.postinstall = node postinstall.cjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node postinstall.cjs

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

dist/browser/index.jsView file

•Manifest-reachable source captures an API credential, sends it to a fixed unofficial gateway, and persists that redirection in agent or shell configuration. dist/browser/index.js: `+" ".repeat(t.indentationLvl)):"["+Error.prototype.toString.call(e)+"]",s.length===0)return a}else if((0,xe.hasBrand)(xe.arrayBufferByteLength,e)||xe.sharedArrayBufferByteLength!=... `),"ERR_INTERNAL_ASSERTION"),rne=(t,e)=>{if(Array.isArray(t)){for(let r=0;r<t.length;r++)if(typeof t[r]!="string")throw(0,Ub.invalidArgType)(e+"["+r+"]","of type string",t[r]);retu... `+t);p0.printJson=pse});var Oj=z(dm=>{"use strict";f();d();u();Object.defineProperty(dm,"__esModule",{value:!0});var dC=(qi(),ui(Oo));dC.__exportStar(vj(),dm);dC.__exportStar(Aj(),... `;case"\\r":return"\r";case"\\t":return" ";case'\\"':return'"';case"

High

Credential Redirect Persistence

Manifest-reachable source sends a prompted API credential to a fixed unofficial gateway and persists the redirection.

dist/browser/index.jsView on unpkg

143`+" ".repeat(t.indentationLvl);return c+l+" "+QB(e,","+l+" ")+l+n[1]};qn.reduceToSingleString=WZ});var rL=z(Se=>{"use strict";f();d();u();Object.defineProperty(Se,"__esModule",{v... L144: `+" ".repeat(t.indentationLvl)):"["+Error.prototype.toString.call(e)+"]",s.length===0)return a}else if((0,xe.hasBrand)(xe.arrayBufferByteLength,e)||xe.sharedArrayBufferByteLength!=... L145: Please open an issue with this stack trace at https://github.com/nodejs/node/issues

Low

Eval

Package source references a known benign dynamic code generation pattern.

dist/browser/index.jsView on unpkg · L143

dist/chunk-LOX4TCKM.jsView file

1import{e as l}from"./chunk-WSBQ4MQX.js";import{a as m,i as s}from"./chunk-ERIIXOHU.js";import{b as i}from"./chunk-NI4EYBQH.js";import{a as t}from"./chunk-JWAWHQZZ.js";import{exists...

Medium

Dynamic Require

Package source references dynamic require/import behavior.

dist/chunk-LOX4TCKM.jsView on unpkg · L1

postinstall.cjsView file

1const { openSync, writeSync, closeSync, mkdirSync, copyFileSync, existsSync } = require('fs'); L2: const { join } = require('path'); ... L10: try { L11: const claudeDir = join(homedir(), '.claude'); L12: const skillDir = join(claudeDir, 'skills', 'tigris'); ... L15: if (existsSync(claudeDir) && existsSync(source)) { L16: mkdirSync(skillDir, { recursive: true }); L17: copyFileSync(source, join(skillDir, 'SKILL.md')); L18: }

Critical

Ai Agent Control Hijack

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

postinstall.cjsView on unpkg · L1

•matchType = normalized_sha256 matchedPackage = @tigrisdata/cli@3.11.0 matchedPath = postinstall.cjs matchedIdentity = npm:QHRpZ3Jpc2RhdGEvY2xp:3.11.0 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.

postinstall.cjsView on unpkg

dist/chunk-7UKHARLH.jsView file

•matchType = normalized_sha256 matchedPackage = @tigrisdata/cli@3.11.0 matchedPath = dist/chunk-7UKHARLH.js matchedIdentity = npm:QHRpZ3Jpc2RhdGEvY2xp:3.11.0 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/chunk-7UKHARLH.jsView on unpkg

Source & flagged code

8 flagged · loading source

package.jsonView file

•scripts.postinstall = node postinstall.cjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node postinstall.cjs

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

dist/browser/index.jsView file

Findings

1 Critical4 High5 Medium5 Low

CriticalAi Agent Control Hijackpostinstall.cjs

HighInstall Time Lifecycle Scriptspackage.json

HighCredential Redirect Persistencedist/browser/index.js

HighKnown Malware Source Similaritydist/chunk-7UKHARLH.js

HighKnown Malware Source Similaritypostinstall.cjs

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumDynamic Requiredist/chunk-LOX4TCKM.js

MediumNetwork

MediumEnvironment Vars

MediumStructural Risk Force Deep Review

LowScripts Present

LowEvaldist/browser/index.js

LowFilesystem

Low

Affected versions and remediation

This report applies to @tigrisdata/cli@3.16.0.

See all versions of @tigrisdata/cli for other recorded verdicts.

Review the evidence and your use of @tigrisdata/cli@3.16.0 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: 2026-10-14 05:14:15.014Z (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