registry / @siwatfa/yorn / 1.0.4

@siwatfa/yorn@1.0.4

OSV Malicious Advisory

scanned 2h ago · by OpenSSF/OSV

OpenSSF/OSV advisory MAL-2026-14102 confirms this npm version as malicious. The package was found to contain malicious code or consuming dependency that contains malicious code

Advisory

MAL-2026-14102

Source

OpenSSF Malicious Packages via OSV

Summary

Malicious code in @siwatfa/yorn (npm)

Details

The package was found to contain malicious code or consuming dependency that contains malicious code ## Source: ghsa-malware (dc765ce6cbae92d77218173fda23eca5505d5dc8342010b79f87ad721aac882a) 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.

Decision reason

One or more suspicious static signals were detected.

References

OSV advisory ADVISORY PACKAGE PACKAGE PACKAGE PACKAGE PACKAGE PACKAGE

Decision evidence

public snapshot

Behavioral surface

Source

ChildProcessDynamicRequireEnvironmentVarsFilesystemNetwork

Supply chain

HighEntropyStringsMinifiedUrlStrings

ManifestNo manifest risk signals triggered.

scanned 0 file(s), 256 KB of source, external domains: 127.0.0.1, feross.org, github.com, huggingface.co, jimmy.warting.se

Oversized source lightweight scan

dist/cli.js6.26 MB file, sampled 256 KB

FilesystemNetworkChildProcessEnvironmentVarsDynamicRequireHighEntropyStringsMinifiedUrlStrings127.0.0.1feross.orggithub.comhuggingface.cojimmy.warting.se

Source & flagged code

14 flagged

dist/cli.jsView file

High

Child Process

Package source references child process execution.

dist/cli.jsView on unpkg · L2

High

Same File Env Network Execution

A single source file combines environment access, network access, and code or shell execution; review context before blocking.

dist/cli.jsView on unpkg · L2

•Manifest-reachable source captures an API credential, sends it to a fixed unofficial gateway, and persists that redirection in agent or shell configuration. dist/cli.js: `,t),([e,n])=>[[e],n]),([e,n])=>[e,n],()=>[]))),([e,n])=>[e,n]),SWe=(t,e=[])=>pe(pe(Aoe(t),([n,r])=>pe(fQt(r),([i,s])=>[[n,i],s])),([n,r])=>SWe(r,[...e,n]),()=>[e,t]),gQt=t=>pe(pe(... `)}function tZt(t,e){let n=Math.min(t.length,e.length),r=0;for(;r<n&&t[r]===e[r];)r++;return r}function Mqe(t,e,n,r){let i=eZt(e),s=a2(i),o=a2($qe(t.content)),a=s,l=0,u=0,c=n?.sess... `){return typeof t=="string"?t:t.filter(n=>n.type==="text").map(n=>n.text).join(e)}var zqe=A(()=>{"use strict"});function gZt(t,e){return Re.Unsafe({type:"string",enum:t,...e?.desc... --api-key <key> API key (defaults to env vars) # Print a provid

High

Credential Redirect Persistence

Manifest-reachable source sends a prompted API credential to a fixed unofficial gateway and persists the redirection.

dist/cli.jsView on unpkg

•Manifest-reachable source resolves another installed package, overwrites its runtime code, and injects package-defined remote behavior. dist/cli.js: var h8t=Object.create;var h4=Object.defineProperty;var f8t=Object.getOwnPropertyDescriptor;var g8t=Object.getOwnPropertyNames;var y8t=Object.getPrototypeOf,b8t=Object.prototype.has... AZURE_OPENAI_BASE_URL - Azure OpenAI/Cognitive Services base URL (e.g. https://{resource}.openai.azure.com) YORN_SHARE_VIEWER_URL - Base URL for /share command (default: https://pi.dev/session/) `)}var U9e,rH=A(()=>{"use strict";Tp();_i();U9e=["off","minimal","low","medium","high","xhigh","max"]});var Que,$9e,urn,W9e=A(()=>{Que=(t,e,n)=>{let r=t instanceof RegExp?$9e(t,n):... More information can be found at: https://a.co/c895JFp`))}}});var

High

Entrypoint Foreign Package Code Overwrite

Manifest-reachable source overwrites another installed package with package-defined remote behavior.

dist/cli.jsView on unpkg

2import { createRequire as __createRequire } from 'module'; const require = __createRequire(import.meta.url); L3: var h8t=Object.create;var h4=Object.defineProperty;var f8t=Object.getOwnPropertyDescriptor;var g8t=Object.getOwnPropertyNames;var y8t=Object.getPrototypeOf,b8t=Object.prototype.has... L4: `,mx="_",z4=".",x3e="$",Y4="-"});function T3e(t){let e=t.indexOf(hzt);return li(e,-1)?"":t.slice(e+2)}function w3e(t){let e=t.indexOf(sR);return li(e,-1)?"":t.slice(e)}function fzt... ... L8: `,n),([r,i])=>[[e,r],i])),([e,n])=>[e,n],()=>pe(pe(Pt(";",t),([e,n])=>[[e],n]),([e,n])=>[e,n],()=>pe(pe(Pt(` L9: `,t),([e,n])=>[[e],n]),([e,n])=>[e,n],()=>[]))),([e,n])=>[e,n]),SWe=(t,e=[])=>pe(pe(Aoe(t),([n,r])=>pe(fQt(r),([i,s])=>[[n,i],s])),([n,r])=>SWe(r,[...e,n]),()=>[e,t]),gQt=t=>pe(pe(... L10: `

High

Command Output Exfiltration

Source combines command execution, command-output handling, and outbound requests; review data flow before blocking.

dist/cli.jsView on unpkg · L2

High

Cloud Metadata Access

Source reaches cloud instance metadata or link-local credential endpoints.

dist/cli.jsView on unpkg · L2

High

Remote Agent Bridge

Source exposes local file and command tools to a remote model endpoint.

dist/cli.jsView on unpkg · L2

2Trigger-reachable command-output exfiltration chain: manifest.bin -> dist/cli.js L2: import { createRequire as __createRequire } from 'module'; const require = __createRequire(import.meta.url); L3: var h8t=Object.create;var h4=Object.defineProperty;var f8t=Object.getOwnPropertyDescriptor;var g8t=Object.getOwnPropertyNames;var y8t=Object.getPrototypeOf,b8t=Object.prototype.has... L4: `,mx="_",z4=".",x3e="$",Y4="-"});function T3e(t){let e=t.indexOf(hzt);return li(e,-1)?"":t.slice(e+2)}function w3e(t){let e=t.indexOf(sR);return li(e,-1)?"":t.slice(e)}function fzt... ... L8: `,n),([r,i])=>[[e,r],i])),([e,n])=>[e,n],()=>pe(pe(Pt(";",t),([e,n])=>[[e],n]),([e,n])=>[e,n],()=>pe(pe(Pt(` L9: `,t),([e,n])=>[[e],n]),([e,n])=>[e,n],()=>[]))),([e,n])=>[e,n]),SWe=(t,e=[])=>pe(pe(Aoe(t),([n,r])=>pe(fQt(r)

High

Trigger Reachable Command Output Exfiltration

A manifest entrypoint or package-local install chain reaches command-output exfiltration behavior.

dist/cli.jsView on unpkg · L2

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

High

Semantic Analysis Limited

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

dist/cli.jsView on unpkg

1#!/usr/bin/env node L2: import { createRequire as __createRequire } from 'module'; const require = __createRequire(import.meta.url); L3: var h8t=Object.create;var h4=Object.defineProperty;var f8t=Object.getOwnPropertyDescriptor;var g8t=Object.getOwnPropertyNames;var y8t=Object.getPrototypeOf,b8t=Object.prototype.has...

Medium

Dynamic Require

Package source references dynamic require/import behavior.

dist/cli.jsView on unpkg · L1

•path = dist/cli.js kind = oversized_source_file sizeBytes = 6563148 magicHex = [redacted]

Medium

Oversized Source File

Package contains source files above the normal full-analysis size ceiling.

dist/cli.jsView on unpkg

•path = dist/cli.js kind = oversized_cli_entrypoint sizeBytes = 6563148 magicHex = [redacted]

Medium

Oversized Cli Entrypoint

Package contains an oversized executable-looking CLI entrypoint.

dist/cli.jsView on unpkg

Low

Weak Crypto

Package source references weak cryptographic algorithms.

dist/cli.jsView on unpkg · L2

dist/skills/screenshot/scripts/take_screenshot.pyView file

•path = dist/skills/screenshot/scripts/take_screenshot.py kind = build_helper sizeBytes = 19659 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

dist/skills/screenshot/scripts/take_screenshot.pyView on unpkg

Source & flagged code

14 flagged · loading source

dist/cli.jsView file

High

Child Process

Package source references child process execution.

dist/cli.jsView on unpkg · L2

High

Same File Env Network Execution

A single source file combines environment access, network access, and code or shell execution; review context before blocking.

dist/cli.jsView on unpkg · L2

Findings

9 High7 Medium6 Low

HighChild Processdist/cli.js

HighSame File Env Network Executiondist/cli.js

HighCredential Redirect Persistencedist/cli.js

HighEntrypoint Foreign Package Code Overwritedist/cli.js

HighCommand Output Exfiltrationdist/cli.js

HighCloud Metadata Accessdist/cli.js

HighRemote Agent Bridgedist/cli.js

HighTrigger Reachable Command Output Exfiltrationdist/cli.js

HighSemantic Analysis Limiteddist/cli.js

MediumDynamic Requiredist/cli.js

MediumNetwork

MediumEnvironment Vars

MediumShips Build Helperdist/skills/screenshot/scripts/take_screenshot.py