postman-cli@1.68.0

Official Postman CLI - Command-line companion for API development, testing, and automation

AI Security Review

scanned 12d ago · by lpm-firewall-ai

The postinstall hook makes an unprompted but narrow, additive change to supported agent instruction files during global installs. This is a first-party agent configuration lifecycle risk warranting a warning, but the inspected behavior does not establish a concrete attack.

Static reason

High-risk behavior combination matched malicious policy.

Trigger

Installing the package globally with npm when a supported agent configuration directory exists.

Impact

Agent instructions gain a product availability note without a user prompt; no more consequential agent action is established by the inspected source.

Mechanism

The hook appends a marked instruction block to Claude Code or Codex instruction files, unless the note is already present.

AI rationale

Evidence

package.jsonscripts/post-npm-installation.js.claude/CLAUDE.md.codex/AGENTS.override.md.codex/AGENTS.md

Decision evidence

public snapshot

AI called this Suspicious at 91.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

package.json runs the installer automatically through postinstall.
The installer appends a Postman CLI availability note to detected agent instruction files during global npm installation.
It targets Claude Code and Codex instruction files and skips files when the configuration directory is absent or the note is already present.

Evidence against

The write is limited to an additive product availability note; this source shows no credential collection, network transfer, or plugin installation.

Behavioral surface

Source

ChildProcessEnvironmentVarsFilesystem

Supply chainNo supply-chain packaging signals triggered.

Manifest

NoLicense

scanned 3 file(s), 15.0 KB of source

Source & flagged code

7 flagged

package.jsonView file

Lines 32-72json

32 "gitlab-ci",

33 "azure-devops",

34 "jenkins",

35 "circleci",

36 "integration-testing",

37 "functional-testing",

38 "test-reports",

39 "junit-reports",

40 "html-reports",

41 "postman-automation",

42 "postman-testing",

43 "postman-runner",

44 "postman-monitor",

45 "rest-api",

46 "http-testing",

47 "api-tools"

48 ],

49 "bin": {

50 "postman": "bin/postman.js"

51 },

52 "scripts": {

53 "postinstall": "node ./scripts/post-npm-installation.js"

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L53

54 },

55 "man": "./man/postman.1",

Medium

Suspicious Lifecycle Evidence

package.json runs the installer automatically through postinstall.

package.jsonView on unpkg · L52

56 "files": [

57 "bin/",

58 "index.js",

59 "package.json",

60 "README.md",

61 "man/",

62 "scripts/"

63 ],

64 "optionalDependencies": {

65 "@postman/pm-bin-macos-arm64": "1.68.0",

66 "@postman/pm-bin-macos-x64": "1.68.0",

67 "@postman/pm-bin-linux-x64": "1.68.0",

68 "@postman/pm-bin-linux-arm64": "1.68.0",

69 "@postman/pm-bin-windows-x64": "1.68.0"

70 }

71}

scripts/post-npm-installation.jsView file

67[redacted]: 'CLAUDE_CONFIG_DIR', L68: fallbackDirectory: '.claude', L69: instructionFileNames: ['CLAUDE.md'], L70: postConfiguration: ({ configurationResult, invocationDirectory }) => { L71: const projectConfigurationDetected = invocationDirectory ? L72: isDirectory(path.join(invocationDirectory, '.claude')) : L73: false; ... L82: [redacted]: 'CODEX_HOME', L83: fallbackDirectory: '.codex', L84: instructionFileNames: ['AGENTS.override.md', 'AGENTS.md'] L85: } ... L199:

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/post-npm-installation.jsView on unpkg · L67

68'.claude', instructionFileNames: ['CLAUDE.md'], postConfiguration: ({ configurationResult, invocationDirectory }) => { const projectConfigurationDetecte

Medium

Ai Review Evidence

The installer appends a Postman CLI availability note to detected agent instruction files during global npm installation.

scripts/post-npm-installation.jsView on unpkg · L68

332function runPostInstallation (environment = process.env) { try { if (!isGlobalInstallation(environment)) { return; } const userHome = opera

Medium

Ai Review Evidence

The installer appends a Postman CLI availability note to detected agent instruction files during global npm installation.

scripts/post-npm-installation.js

scripts/post-npm-installation.js#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 1

High

Semantic Analysis Limited

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

scripts/post-npm-installation.js#virtual:normalized:round1View on unpkg

Source & flagged code

7 flagged · loading source

package.jsonView file

•scripts.postinstall = node ./scripts/post-npm[redacted]

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

52"scripts": { "postinstall": "node ./scripts/post-npm[redacted]" }, "man": "./man/pos

Medium

Suspicious Lifecycle Evidence

package.json runs the installer automatically through postinstall.

package.jsonView on unpkg · L52

scripts/post-npm-installation.jsView file

Findings

1 Critical2 High6 Medium3 Low

CriticalAi Agent Control Hijackscripts/post-npm-installation.js

HighInstall Time Lifecycle Scriptspackage.json

HighSemantic Analysis Limitedscripts/post-npm-installation.js#virtual:normalized:round1

MediumEnvironment Vars

MediumStructural Risk Force Deep Review

MediumSuspicious Lifecycle Evidencepackage.json

MediumAi Review Evidencescripts/post-npm-installation.js

LowScripts Present

LowFilesystem

LowNo License

Affected versions and remediation

This report applies to postman-cli@1.68.0.

See all versions of postman-cli for other recorded verdicts.

Review the evidence and your use of postman-cli@1.68.0 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: 2026-10-11 13:03:08.192Z (UTC).

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