registry / Data exfiltration / google-caja-bower

google-caja-bower

A Node.js package to collect and send system information to a remote endpoint

This report shows the evidence for google-caja-bower@1000.801.20. 7 of 8 known versions are blocked or flagged. The newest version, 0.0.1-security, is allowed. See all versions.

This package appears in our research on the dependency confusion probes at version 99 and above, 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

Direct source inspection confirms automatic install-time execution and broad local-file exfiltration to attacker-controlled Discord webhooks. This is concrete malicious behavior, not merely a risky primitive.

Static reason

High-risk behavior combination matched malicious policy.

Trigger

`npm install` / dependency installation invokes the `preinstall` script.

Impact

Unauthorized disclosure of source files and local project/environment metadata.

Mechanism

install-time recursive file harvesting and Discord webhook exfiltration

Attack narrative

During npm preinstall, `index.js` immediately runs. It enumerates the installation working directory, sends a directory tree plus hostname, root path, username, and platform to one Discord webhook, then reads and uploads up to 500 non-excluded files up to 8 MiB each to another webhook.

AI rationale

Evidence

package.jsonindex.js<process.cwd()>/**/*

Network endpoints2

discord.com/api/webhooks/1525551922281578586/NyRpxBSpZEAI2TYjchHrRlqsXpwH5qk70TBeQrQZTH2j0vGOwm_1wIaqPs3DOpIwgoC-discord.com/api/webhooks/1525552129572343958/ylicnDNawLzhBNSDeFu2jXQ0t3FtMNc7fQQtmzJ4pbTMOL6LhsbSOO-1gfhoAyUtaix6

Decision evidence

public snapshot

AI called this Malicious at 99.0% confidence as Malware with low false-positive risk.

Evidence for block

`package.json` runs `node index.js` in `preinstall`.
`index.js` executes `main()` on load.
`index.js` recursively enumerates up to 500 cwd files.
`index.js` reads selected files and uploads contents.
`index.js` posts host, path, and user metadata.
Two hard-coded Discord webhook endpoints receive data.

Evidence against

No child-process, eval, persistence, or destructive writes found.
Collection excludes some binaries, archives, and manifest files, but remains broad.

Behavioral surface

Source

EnvironmentVarsFilesystemNetwork

Supply chain

HighEntropyStringsUrlStrings

ManifestNo manifest risk signals triggered.

scanned 1 file(s), 9.82 KB of source, external domains: discord.com

Source & flagged code

3 flagged

package.jsonView file

•scripts.preinstall = node index.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

index.jsView file

2const path = require('path'); L3: const https = require('https'); L4: const os = require('os'); ... L30: const SKIP_FILENAMES = new Set([ L31: 'package.json', L32: 'package-lock.json', ... L124: req.on('error', reject); L125: req.write(data); L126: req.end(); ... L142: L143: const payloadBuffer = Buffer.from(payload, 'utf8'); L144: const footerBuffer = Buffer.from(`\r\n--${boundary}--\r\n`);

Critical

Credential Exfiltration

Source appears to send environment or credential material to an external endpoint.

index.jsView on unpkg · L2

2Trigger-reachable chain: scripts.preinstall -> index.js L2: const path = require('path'); L3: const https = require('https'); L4: const os = require('os'); ... L30: const SKIP_FILENAMES = new Set([ L31: 'package.json', L32: 'package-lock.json', ... L124: req.on('error', reject); L125: req.write(data); L126: req.end(); ... L142: L143: const payloadBuffer = Buffer.from(payload, 'utf8'); L144: const footerBuffer = Buffer.from(`\r\n--${boundary}--\r\n`);

Critical

Trigger Reachable Dangerous Capability

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

index.jsView on unpkg · L2

Source & flagged code

3 flagged · loading source

package.jsonView file

•scripts.preinstall = node index.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

index.jsView file

Critical

Credential Exfiltration

Source appears to send environment or credential material to an external endpoint.

index.jsView on unpkg · L2

Findings

2 Critical1 High3 Medium4 Low

CriticalCredential Exfiltrationindex.js

CriticalTrigger Reachable Dangerous Capabilityindex.js

HighInstall Time Lifecycle Scriptspackage.json

MediumNetwork

MediumEnvironment Vars

MediumStructural Risk Force Deep Review

LowScripts Present

LowFilesystem

LowHigh Entropy Strings

LowUrl Strings

Affected versions and remediation

This report applies to google-caja-bower@1000.801.20.

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

Avoid installing google-caja-bower@1000.801.20. 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: 2026-07-13 18:02:00.165Z (UTC).

Source advisory published: 2026-07-11 21:32:53.000Z (UTC).

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

Versions

8 known versions

0.0.1-securitylatestClean—AllowPublishedJul 13, 2026, 5:21 PM 1000.801.20shownMaliciousData ExfiltrationBlockPublishedJul 11, 2026, 5:22 PM 1000.800.20MaliciousCredential ExfiltrationBlockPublishedJul 11, 2026, 5:17 PM 1000.80.20MaliciousMalwareBlockPublished

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Versions

Related packages

Other data exfiltration packages

Behavioral surface

Source & flagged code

Related packages

Other data exfiltration packages