registry / Malware / imgdecode / 1.0.1

imgdecode@1.0.1

OpenSSF/OSV Malicious Advisory

imported 5h ago · by OpenSSF/OSV

OpenSSF/OSV advisory MAL-2026-18196 confirms this npm version as malicious.

Advisory

MAL-2026-18196

Source

OpenSSF Malicious Packages via OSV

Summary

Malicious code in imgdecode (npm)

Details

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

References

OpenSSF/OSV advisory ADVISORY

Independent LPM AI assessment

Suspicious

Independent AI assessment: suspicious. LPM AI assessed this version as suspicious; the assessments disagree.

Automatic native loading, networking and decryption imports, and a nonfunctional public decoder warrant a warning pending clarification of the native behavior. The manifest mismatch hint and binary markers do not establish a concrete malicious chain.

Static reason

No blocking static signals were detected.

Trigger

Importing imgdecode, with native loading dependent on platform compatibility.

Impact

Unexplained native execution presents unresolved risk, but malicious effects were not demonstrated.

Mechanism

The entrypoint loads imgbundle and attempts native addon initialization while exporting a function that returns null.

AI rationale

Evidence

index.jsprebuilds/win32-x64/imgdecode.nodepackage.json

Independent scan evidence

public snapshot

AI called this Suspicious at 72.0% confidence as Unknown with high false-positive risk.

Evidence for AI warning decision

index.js automatically loads imgbundle and attempts to load a Windows native addon on import.
The native addon contains Internet URL access and cryptographic decryption import markers.
The exported load function returns null, leaving the native addon's purpose unexplained.
package.json declares imgbundle as a runtime dependency and contains no lifecycle scripts.

Evidence against

No concrete endpoint, credential harvesting, malicious write, or payload execution chain was established.
Native networking and cryptography imports alone do not prove malicious behavior.

Behavioral surface

Source

NativeBindings

Supply chain

Trivial

ManifestNo manifest risk signals triggered.

scanned 1 file(s), 224 B of source

Source & flagged code

7 flagged

prebuilds/win32-x64/imgdecode.nodeView file

2944InternetOpenUrl

High

Ai Review Evidence

The native addon contains Internet URL access and cryptographic decryption import markers.

prebuilds/win32-x64/imgdecode.nodeView on unpkg · L2944

2944BCryptDecrypt

High

Ai Review Evidence

The native addon contains Internet URL access and cryptographic decryption import markers.

prebuilds/win32-x64/imgdecode.nodeView on unpkg · L2944

•path = prebuilds/win32-x64/imgdecode.node kind = native_binary sizeBytes = 701952 magicHex = [redacted]

Medium

Ships Native Binary

Package ships native binary artifacts.

prebuilds/win32-x64/imgdecode.nodeView on unpkg

package.jsonView file

•scripts registry_only=install

Critical

Manifest Confusion

Tarball package.json differs from the npm registry version manifest for scripts or dependency sets.

package.jsonView on unpkg

14"dependencies": { "imgbundle": "^1.0.2" } }

High

Suspicious Lifecycle Evidence

package.json declares imgbundle as a runtime dependency and contains no lifecycle scripts.

package.jsonView on unpkg · L14

index.jsView file

1require('imgbundle'); try { require('./prebuilds/win32-x64/imgdecode.node'); } catch (_) { try { require('./build/Release/imgdecode.node'); } catch (_) {} } fun

High

Ai Review Evidence

index.js automatically loads imgbundle and attempts to load a Windows native addon on import.

index.jsView on unpkg · L1

9function load() { return null; } module.exports = { load };

High

Ai Review Evidence

The exported load function returns null, leaving the native addon's purpose unexplained.

index.jsView on unpkg · L9

Source & flagged code

7 flagged · loading source

prebuilds/win32-x64/imgdecode.nodeView file

2944InternetOpenUrl

High

Ai Review Evidence

The native addon contains Internet URL access and cryptographic decryption import markers.

prebuilds/win32-x64/imgdecode.nodeView on unpkg · L2944

2944BCryptDecrypt

High

Ai Review Evidence

The native addon contains Internet URL access and cryptographic decryption import markers.

prebuilds/win32-x64/imgdecode.nodeView on unpkg · L2944

•path = prebuilds/win32-x64/imgdecode.node kind = native_binary sizeBytes = 701952 magicHex = [redacted]

Medium

Ships Native Binary

Package ships native binary artifacts.

prebuilds/win32-x64/imgdecode.nodeView on unpkg

package.jsonView file

Findings

1 Critical5 High1 Medium

CriticalManifest Confusionpackage.json

HighSuspicious Lifecycle Evidencepackage.json

HighAi Review Evidenceindex.js

HighAi Review Evidenceprebuilds/win32-x64/imgdecode.node

HighAi Review Evidenceindex.js

MediumShips Native Binaryprebuilds/win32-x64/imgdecode.node

Affected versions and remediation

This report applies to imgdecode@1.0.1.

See all versions of imgdecode for other recorded verdicts.

Avoid installing imgdecode@1.0.1. 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: 2026-10-22 20:35:07.883Z (UTC).

Source advisory published: 2026-10-22 19:24:45.000Z (UTC).

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

OpenSSF/OSV Malicious Advisory

Independent LPM AI assessment

Independent scan evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Related packages

Other malware packages

Source & flagged code

Related packages

Other malware packages