registry / Remote code execution / chai-as-deployer

chai-as-deployer

This document describes the management of vulnerabilities for the project and all modules within the organization.

This report shows the evidence for chai-as-deployer@2.3.6. 2 of 2 known versions are blocked or flagged. See all versions.

This package appears in our research on the fake chai plugin campaign, with how it works, the full package list and what to do if you installed it.

AI Security Review

scanned 3mo ago · by lpm-firewall-ai

The hidden import-time payload and concealed host/process capability are concrete malicious behavior, not package-aligned functionality. Absence of an install hook does not mitigate execution on normal import.

Static reason

High-risk behavior combination matched malicious policy.

Trigger

Any application require/import of chai-as-deployer.

Impact

Hidden runtime execution can inspect the host and launch additional commands or payload behavior.

Mechanism

Import-time obfuscated payload with decoded process and filesystem operations.

Attack narrative

Requiring index.js immediately evaluates lib/config.js. That file is a 4 MB obfuscated, self-decoding payload unrelated to the advertised middleware; its source includes anti-analysis logic, directory enumeration, and construction of process-execution options. Since index.js does not use the imported config and otherwise returns a no-op middleware, the import exists to trigger concealed behavior.

AI rationale

Evidence

package.jsonindex.jslib/config.js

Decision evidence

public snapshot

AI called this Malicious at 96.0% confidence as Malware with low false-positive risk.

Evidence for block

package.json has no lifecycle hook, but main is index.js.
index.js imports ./lib/config at module load and never uses it.
lib/config.js is a 4.08 MB single-line heavily obfuscated executable payload.
lib/config.js contains runtime string decoding, anti-analysis code, directory traversal, and process-execution option construction.
index.js imports child_process.spawn despite exposing only a no-op middleware.

Evidence against

No install/preinstall/postinstall lifecycle script is declared.
No plaintext endpoint could be reliably recovered by static reading.

Behavioral surface

Source

ChildProcessEnvironmentVars

Supply chain

HighEntropyStringsMinifiedUrlStrings

ManifestNo manifest risk signals triggered.

scanned 15 file(s), 307 KB of source, external domains: github.com

Oversized source lightweight scan

Source & flagged code

4 flagged

index.jsView file

3const path = require('path'); L4: const { spawn } = require('child_process'); L5: const { DEFAULT_LEVELS, SORTING_ORDER } = require('./lib/constants');

High

Child Process

Package source references child process execution.

index.jsView on unpkg · L3

lib/config.jsView file

1(function(F,S){const Tm={F:0x1a97,S:0x367e,Y:0x1dc3,E:0x16ff,i:'\x6c\x77\x6c\x74',B:0x2085,N:0x23db,V:0x23bd,J:0x9a9,W:'\x74\x21\x53\x57',o:'\x5d\x2a\x6b\x6a',v:0x2734,a:0x1a54,q:0...

Critical

Download Execute

Source downloads or fetches remote code and executes it.

lib/config.jsView on unpkg · L1

1Trigger-reachable chain: manifest.main -> index.js -> lib/config.js L1: (function(F,S){const Tm={F:0x1a97,S:0x367e,Y:0x1dc3,E:0x16ff,i:'\x6c\x77\x6c\x74',B:0x2085,N:0x23db,V:0x23bd,J:0x9a9,W:'\x74\x21\x53\x57',o:'\x5d\x2a\x6b\x6a',v:0x2734,a:0x1a54,q:0...

Critical

Trigger Reachable Dangerous Capability

A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior.

lib/config.jsView on unpkg · L1

docs/transports.mdView file

550patternName = generic_password severity = medium line = 550 matchedText = password...rd',

Medium

Secret Pattern

Hardcoded password in docs/transports.md

docs/transports.mdView on unpkg · L550

Source & flagged code

4 flagged · loading source

index.jsView file

3const path = require('path'); L4: const { spawn } = require('child_process'); L5: const { DEFAULT_LEVELS, SORTING_ORDER } = require('./lib/constants');

High

Child Process

Package source references child process execution.

index.jsView on unpkg · L3

lib/config.jsView file

1(function(F,S){const Tm={F:0x1a97,S:0x367e,Y:0x1dc3,E:0x16ff,i:'\x6c\x77\x6c\x74',B:0x2085,N:0x23db,V:0x23bd,J:0x9a9,W:'\x74\x21\x53\x57',o:'\x5d\x2a\x6b\x6a',v:0x2734,a:0x1a54,q:0...

Critical

Download Execute

Source downloads or fetches remote code and executes it.

lib/config.jsView on unpkg · L1

Critical

Trigger Reachable Dangerous Capability

A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior.

Findings

2 Critical1 High3 Medium3 Low

CriticalDownload Executelib/config.js

CriticalTrigger Reachable Dangerous Capabilitylib/config.js

HighChild Processindex.js

MediumEnvironment Vars

MediumStructural Risk Force Deep Review

MediumSecret Patterndocs/transports.md

LowScripts Present

LowHigh Entropy Strings

LowUrl Strings

Affected versions and remediation

This report applies to chai-as-deployer@2.3.6.

The versions list below shows the verdict for each recorded version.

Avoid installing chai-as-deployer@2.3.6. Remove it from direct dependencies and check your lockfile for transitive copies.
Choose an independently verified alternative or release. This report does not establish that other versions are safe.
If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.

Evidence last updated: 2026-09-24 09:10:30.563Z (UTC).

Source advisory published: 2026-08-10 12:30:35.000Z (UTC).

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

Versions

2 known versions

2.3.6latestshownMaliciousRemote Code ExecutionBlockPublishedJul 20, 2026, 11:51 PM 2.3.5MaliciousMalwareBlockPublishedJul 18, 2026, 9:45 AM

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Versions

Related packages

Other remote code execution packages

Behavioral surface

Source & flagged code

Related packages

Other remote code execution packages