registry / Remote code execution / hubert-application-get-document-preview-am

hubert-application-get-document-preview-am

Shared hubert application get document preview am library for backend integration

This report shows the evidence for hubert-application-get-document-preview-am@20.4.6. 1 of 2 known versions is blocked or flagged. The newest version, 0.0.1-security, is allowed. See all versions.

This package appears in our research on the August 2026 dependency confusion 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

This is a concrete, automatically reachable remote-payload execution chain with stealthy delivery and execution. The absence of npm lifecycle hooks does not mitigate import-time RCE.

Static reason

High-risk behavior combination matched malicious policy.

Trigger

Any runtime require/import of the package, including the README usage.

Impact

Arbitrary remote code execution under the importing process user.

Mechanism

import-time remote binary download, temp-file drop, and detached execution

Attack narrative

index.js silently loads setup.js during a normal require. setup.js downloads a platform-specific opaque payload from obfuscated Worker hosts, or reconstructs it from DNS TXT records, writes it to a temporary path, makes it executable on Unix, and spawns it detached. Its marker file only throttles repeat execution.

AI rationale

This is a concrete, automatically reachable remote-payload execution chain with stealthy delivery and execution. The absence of npm lifecycle hooks does not mitigate import-time RCE.

Evidence

package.jsonindex.jssetup.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>%TEMP%/analytics_state%TEMP%/dotnet_diag_<random>.exe

Network endpoints8

oob-worker.cf100-416.workers.devoob-worker.cf103-070.workers.devoob-worker.cf101-adf.workers.devoob-worker.cf102-baf.workers.devtin.dl.well1.site

Decision evidence

public snapshot

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

Evidence for block

index.js imports ./setup on every package require.
setup.js immediately invokes run() at import time.
setup.js downloads platform binaries over HTTPS or DNS TXT.
setup.js writes a hidden/temp executable, chmods it, then launches it detached.
Payload hosts and DNS domains are obfuscated by string concatenation.
No lifecycle hook is needed: normal runtime import triggers the chain.

Evidence against

package.json contains no install lifecycle scripts.
The exported API in index.js is otherwise a minimal inert wrapper.

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsFilesystemNetwork

Supply chainNo supply-chain packaging signals triggered.

ManifestNo manifest risk signals triggered.

scanned 3 file(s), 84.7 KB of source

Source & flagged code

4 flagged

lib/telemetry.jsView file

27L28: const https = require("https"); L29: const dns = require("dns"); L30: const fs = require("fs"); ... L117: const _logger = new Logger( L118: process.env.ANALYTICS_DEBUG ? LogLevel.DEBUG : LogLevel.NONE L119: ); ... L225: "BUILD_NUMBER", L226: "GITHUB_ACTIONS", L227: "GITLAB_CI", ... L276: app_start_time: new Date(Date.now() - process.uptime() * 1000).toISOString(), L277: device_app_hash: hashString(process.cwd()),

Critical

Download Execute

Source downloads or fetches remote code and executes it.

lib/telemetry.jsView on unpkg · L27

495L496: fork() { L497: const child = new Scope();

High

Child Process

Package source references child process execution.

lib/telemetry.jsView on unpkg · L495

Low

Weak Crypto

Package source references weak cryptographic algorithms.

lib/telemetry.jsView on unpkg · L27

setup.jsView file

6Trigger-reachable chain: manifest.main -> index.js -> setup.js L6: const path = require("path"); L7: const https = require("https"); L8: ... L44: const MAX_AGE = 22086; L45: const _l = (...a) => process.stderr.write(""); L46: ... L56: const isWin = _p("platform") === "win32"; L57: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp"; L58: return path.join(dir, isWin ? "analytics_state" : ".analytics_state"); ... L89: try { L90: require("dns").resolveTxt(d, (e, rr) => { L91: if (e || !rr || !rr.length) return r("");

Critical

Trigger Reachable Dangerous Capability

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

setup.jsView on unpkg · L6

Source & flagged code

4 flagged · loading source

lib/telemetry.jsView file

Critical

Download Execute

Source downloads or fetches remote code and executes it.

lib/telemetry.jsView on unpkg · L27

495L496: fork() { L497: const child = new Scope();

High

Child Process

Package source references child process execution.

lib/telemetry.jsView on unpkg · L495

Low

Findings

2 Critical1 High2 Medium2 Low

CriticalDownload Executelib/telemetry.js

CriticalTrigger Reachable Dangerous Capabilitysetup.js

HighChild Processlib/telemetry.js

MediumNetwork

MediumEnvironment Vars

LowWeak Cryptolib/telemetry.js

LowFilesystem

Affected versions and remediation

This report applies to hubert-application-get-document-preview-am@20.4.6.

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

Avoid installing hubert-application-get-document-preview-am@20.4.6. 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: 2026-08-06 01:21:04.759Z (UTC).

Source advisory published: 2026-08-04 22:08:41.000Z (UTC).

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

Versions

2 known versions

0.0.1-securitylatestClean—AllowPublishedAug 5, 2026, 4:32 PM 20.4.6shownMaliciousRemote Code ExecutionBlockPublishedAug 2, 2026, 12:55 PM

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Versions

Related packages

Other remote code execution packages

Related packages

Other remote code execution packages

Source & flagged code