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@pilllesss/yorn@1.0.98: Clean npm security report (Allow) | LPM Firewall

registry / @pilllesss/yorn / 1.0.98

@pilllesss/yorn@1.0.98

Yorn terminal AI coding agent CLI

AI Security Review

scanned 53m ago · by lpm-firewall-ai

No confirmed malicious attack surface was established. The package is a user-invoked coding-agent CLI; its networked model-provider behavior is package-aligned and constrained to approved Google API hosts.

Static reason

One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review; source fingerprint signature matched known malicious package; routed for review

Trigger

User runs the yorn CLI and configures or invokes a model provider.

Impact

Normal user-authorized file, command, and model-provider access for a coding-agent CLI.

Mechanism

Interactive coding-agent tools and authenticated model API requests

Rationale

Direct inspection found no install-time execution, credential exfiltration to an unofficial endpoint, foreign-package overwrite, stealth persistence, or destructive chain. Static hints overstate normal bundled coding-agent capabilities and same-package configuration behavior.

Evidence

package.jsonREADME.mddist/yorn.cjs

Decision evidence

public snapshot

AI called this Clean at 89.0% confidence as Benign with medium false-positive risk.

Evidence for block

Evidence against

package.json exposes only the yorn CLI and has no install/postinstall hook; prepublishOnly is publish-time build.

Source & flagged code

14 flagged · loading source

dist/yorn.cjsView file

22\r L23: `),n=!1,s=!1;e.on("response",e=>{let{headers:t}=e;n="chunked"===t[tGG.build(["trans","fer-encod","ing"],[0,1,2])]&&!t[tGG.build([tGG.build(["conten","t-le"],[0,1]),"ngth"],[0,1])]}... L24: `)}function eXh(e){return e.map(e=>"text"===e.type?e.text:"thinking"===e.type?e.thinking:`${e.name}:${JSON.stringify(e.arguments)}`).join(`

High

Child Process

Package source references child process execution.

dist/yorn.cjsView on unpkg · L22

11${eML(e)}`);if(null==o)throw new Il(`missing choices[${r}].tool_calls[${i}].function.arguments L12: ${eML(e)}`);return{...a,id:l,type:s,function:{...d,name:u,arguments:o}}})}}:{...s,message:{...u,content:l,role:d,refusal:t.refusal??null},finish_reason:i,index:r,logprobs:n}}),crea... L13: Content-Disposition: form-data; name="`;return e.forEach((e,t)=>"string"==typeof e?r.push(n+Py(t)+`"\r ... L22: \r L23: `),n=!1,s=!1;e.on("response",e=>{let{headers:t}=e;n="chunked"===t[tGG.build(["trans","fer-encod","ing"],[0,1,2])]&&!t[tGG.build([tGG.build(["conten","t-le"],[0,1]),"ngth"],[0,1])]}... L24: `)}function eXh(e){return e.map(e=>"text"===e.type?e.text:"thinking"===e.type?e.thinking:`${e.name}:${JSON.stringify(e.arguments)}`).join(`

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/yorn.cjsView on unpkg · L11

•Manifest-reachable source captures an API credential, sends it to a fixed unofficial gateway, and persists that redirection in agent or shell configuration. dist/yorn.cjs: `),n=!1,s=!1;e.on("response",e=>{let{headers:t}=e;n="chunked"===t[tGG.build(["trans","fer-encod","ing"],[0,1,2])]&&!t[tGG.build([tGG.build(["conten","t-le"],[0,1]),"ngth"],[0,1])]}... `)}function eXg(e,t){let i=Math.min(e.length,t.length),r=0;for(;r<i&&e[r]===t[r];)r++;return r}function eX_(e,t,i,r){let n=eXf(t),s=eXd(n),l=eXd(eXh(e.content)),a=s,o=0,u=0,d=i?.se... `){return tGL.evalInvariant(20359)&&"string"==typeof e?e:e.filter(e=>"text"===e.type).map(e=>e.text).join(t)}function eXH(e,t){return Yb.Unsafe({type:"string",enum:e,...t?.descript... --api-key <key> API key (defaults to env vars) # Print a prov

High

Credential Redirect Persistence

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

dist/yorn.cjsView on unpkg

•Manifest-reachable source resolves another installed package, overwrites its runtime code, and injects package-defined remote behavior. dist/yorn.cjs: `)),r.push(`--${i}--`),new t(r,{type:tGG.build(["ta; bou","form-da","y=","ndar","multipart/"],[4,1,0,3,2])+i})}function eM7(e){let t=e.match(/\bfilename=("(.*?)"|([^()<>@,;:\\"/[\]... 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/) </html>`}function te7(e){return te8({title:tGG.build(["Authen",tGG.build(["s","tication "],[1,0]),"uccessf","ul"],[0,1,2,3]),heading:tGG.build(["Authe","ul","nticat","cessf","ion s... `)||"";n.block.thinking=s||o||n.block.thinking,n.block.thinkingS

High

Entrypoint Foreign Package Code Overwrite

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

dist/yorn.cjsView on unpkg

7`),u.push(`\r L8: `)}u.push(null)}),u}async function eNx(e,t){let i=0,r=[],n=e.getReader(),s=!1;for(;!s;){let{done:e,value:l}=await n.read();if(l&&(r.push(l),i+=l?.byteLength??0),tGL.evalInvariant(6... L9: ${eML(e)}`);if(null==s)throw new Il(`missing choices[${r}].tool_calls[${i}].type ... L11: ${eML(e)}`);if(null==o)throw new Il(`missing choices[${r}].tool_calls[${i}].function.arguments L12: ${eML(e)}`);return{...a,id:l,type:s,function:{...d,name:u,arguments:o}}})}}:{...s,message:{...u,content:l,role:d,refusal:t.refusal??null},finish_reason:i,index:r,logprobs:n}}),crea... L13: Content-Disposition: form-data; name="`;return e.forEach((e,t)=>"string"==typeof e?r.push(n+Py(t)+`"\r ... L22: \r L23: `),n=!1,s=!1;e.on("response",e=>{let{headers:t}=e;n="chunked"===t[tGG.build(["trans","fer-e

High

Command Output Exfiltration

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

dist/yorn.cjsView on unpkg · L7

2globalThis.__yorn_dynamic_import = (m) => import(m); L3: var e,t,i,r,n,s,l,a,o,u,d,c,b,h,p,m,f,g,_,y,E,S,v,A,T,w,C,I,x,R,O,k,N,D,P,M,L,F,U,B,$,j,G,q,H,W,V,Y,K,z,Q,J,X,Z,ee,et,ei,er,en,es,el,ea,eo,eu,ed,ec,eb,eh,ep,em,ef,eg,e_,ey,eE,eS,ev... L4: `),u.push(e),u.push(`\r ... L7: `),u.push(`\r L8: `)}u.push(null)}),u}async function eNx(e,t){let i=0,r=[],n=e.getReader(),s=!1;for(;!s;){let{done:e,value:l}=await n.read();if(l&&(r.push(l),i+=l?.byteLength??0),tGL.evalInvariant(6... L9: ${eML(e)}`);if(null==s)throw new Il(`missing choices[${r}].tool_calls[${i}].type ... L11: ${eML(e)}`);if(null==o)throw new Il(`missing choices[${r}].tool_calls[${i}].function.arguments L12: ${eML(e)}`);return{...a,id:l,type:s,function:{...d,name:u,arguments:o}}})}}:{...s,message:{...u,content:l,role:d,refusal:t.

High

Cloud Metadata Access

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

dist/yorn.cjsView on unpkg · L2

7Trigger-reachable command-output exfiltration chain: manifest.bin -> dist/yorn.cjs L7: `),u.push(`\r L8: `)}u.push(null)}),u}async function eNx(e,t){let i=0,r=[],n=e.getReader(),s=!1;for(;!s;){let{done:e,value:l}=await n.read();if(l&&(r.push(l),i+=l?.byteLength??0),tGL.evalInvariant(6... L9: ${eML(e)}`);if(null==s)throw new Il(`missing choices[${r}].tool_calls[${i}].type ... L11: ${eML(e)}`);if(null==o)throw new Il(`missing choices[${r}].tool_calls[${i}].function.arguments L12: ${eML(e)}`);return{...a,id:l,type:s,function:{...d,name:u,arguments:o}}})}}:{...s,message:{...u,content:l,role:d,refusal:t.refusal??null},finish_reason:i,index:r,logprobs:n}}),crea... L13: Content-Disposition: form-data; name="`;return e.forEach((e,t)=>"string"==typeof e?r.push(n+Py(t)+`"\r ... L22: \r L23: `),n=!1,

High

Trigger Reachable Command Output Exfiltration

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

dist/yorn.cjsView on unpkg · L7

•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/yorn.cjsView on unpkg

•matchType = normalized_sha256 matchedPackage = @pilllesss/yorn@1.0.92 matchedPath = dist/yorn.cjs matchedIdentity = npm:QHBpbGxsZXNzcy95b3Ju:1.0.92 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

dist/yorn.cjsView on unpkg

•matchType = malicious_source_fingerprint_signature signature = 8eb5d4d2248a43c7 signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = @pilllesss/yorn@1.0.92 matchedPath = dist/yorn.cjs matchedIdentity = npm:QHBpbGxsZXNzcy95b3Ju:1.0.92 similarity = 1.000 shingleOverlap = 2 summary = package final verdict is malicious

High

Known Malware Source Fingerprint Signature

Source fingerprint signature matches a known malicious package signature; route for source-aware review.

dist/yorn.cjsView on unpkg

1#!/usr/bin/env node L2: globalThis.__yorn_dynamic_import = (m) => import(m); L3: var e,t,i,r,n,s,l,a,o,u,d,c,b,h,p,m,f,g,_,y,E,S,v,A,T,w,C,I,x,R,O,k,N,D,P,M,L,F,U,B,$,j,G,q,H,W,V,Y,K,z,Q,J,X,Z,ee,et,ei,er,en,es,el,ea,eo,eu,ed,ec,eb,eh,ep,em,ef,eg,e_,ey,eE,eS,ev...

Medium

Dynamic Require

Package source references dynamic require/import behavior.

dist/yorn.cjsView on unpkg · L1

•path = dist/yorn.cjs kind = oversized_source_file sizeBytes = 7670865 magicHex = [redacted]

Medium

Oversized Source File

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

dist/yorn.cjsView on unpkg

•path = dist/yorn.cjs kind = oversized_cli_entrypoint sizeBytes = 7670865 magicHex = [redacted]

Medium

Oversized Cli Entrypoint

Package contains an oversized executable-looking CLI entrypoint.

dist/yorn.cjsView on unpkg

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

dist/yorn.cjsView file

22\r L23: `),n=!1,s=!1;e.on("response",e=>{let{headers:t}=e;n="chunked"===t[tGG.build(["trans","fer-encod","ing"],[0,1,2])]&&!t[tGG.build([tGG.build(["conten","t-le"],[0,1]),"ngth"],[0,1])]}... L24: `)}function eXh(e){return e.map(e=>"text"===e.type?e.text:"thinking"===e.type?e.thinking:`${e.name}:${JSON.stringify(e.arguments)}`).join(`

High

Child Process

Package source references child process execution.

dist/yorn.cjsView on unpkg · L22

11${eML(e)}`);if(null==o)throw new Il(`missing choices[${r}].tool_calls[${i}].function.arguments L12: ${eML(e)}`);return{...a,id:l,type:s,function:{...d,name:u,arguments:o}}})}}:{...s,message:{...u,content:l,role:d,refusal:t.refusal??null},finish_reason:i,index:r,logprobs:n}}),crea... L13: Content-Disposition: form-data; name="`;return e.forEach((e,t)=>"string"==typeof e?r.push(n+Py(t)+`"\r ... L22: \r L23: `),n=!1,s=!1;e.on("response",e=>{let{headers:t}=e;n="chunked"===t[tGG.build(["trans","fer-encod","ing"],[0,1,2])]&&!t[tGG.build([tGG.build(["conten","t-le"],[0,1]),"ngth"],[0,1])]}... L24: `)}function eXh(e){return e.map(e=>"text"===e.type?e.text:"thinking"===e.type?e.thinking:`${e.name}:${JSON.stringify(e.arguments)}`).join(`

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/yorn.cjsView on unpkg · L11

•Manifest-reachable source captures an API credential, sends it to a fixed unofficial gateway, and persists that redirection in agent or shell configuration. dist/yorn.cjs: `),n=!1,s=!1;e.on("response",e=>{let{headers:t}=e;n="chunked"===t[tGG.build(["trans","fer-encod","ing"],[0,1,2])]&&!t[tGG.build([tGG.build(["conten","t-le"],[0,1]),"ngth"],[0,1])]}... `)}function eXg(e,t){let i=Math.min(e.length,t.length),r=0;for(;r<i&&e[r]===t[r];)r++;return r}function eX_(e,t,i,r){let n=eXf(t),s=eXd(n),l=eXd(eXh(e.content)),a=s,o=0,u=0,d=i?.se... `){return tGL.evalInvariant(20359)&&"string"==typeof e?e:e.filter(e=>"text"===e.type).map(e=>e.text).join(t)}function eXH(e,t){return Yb.Unsafe({type:"string",enum:e,...t?.descript... --api-key <key> API key (defaults to env vars) # Print a prov

High

Credential Redirect Persistence

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

dist/yorn.cjsView on unpkg

•Manifest-reachable source resolves another installed package, overwrites its runtime code, and injects package-defined remote behavior. dist/yorn.cjs: `)),r.push(`--${i}--`),new t(r,{type:tGG.build(["ta; bou","form-da","y=","ndar","multipart/"],[4,1,0,3,2])+i})}function eM7(e){let t=e.match(/\bfilename=("(.*?)"|([^()<>@,;:\\"/[\]... 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/) </html>`}function te7(e){return te8({title:tGG.build(["Authen",tGG.build(["s","tication "],[1,0]),"uccessf","ul"],[0,1,2,3]),heading:tGG.build(["Authe","ul","nticat","cessf","ion s... `)||"";n.block.thinking=s||o||n.block.thinking,n.block.thinkingS

High

Entrypoint Foreign Package Code Overwrite

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

dist/yorn.cjsView on unpkg

7`),u.push(`\r L8: `)}u.push(null)}),u}async function eNx(e,t){let i=0,r=[],n=e.getReader(),s=!1;for(;!s;){let{done:e,value:l}=await n.read();if(l&&(r.push(l),i+=l?.byteLength??0),tGL.evalInvariant(6... L9: ${eML(e)}`);if(null==s)throw new Il(`missing choices[${r}].tool_calls[${i}].type ... L11: ${eML(e)}`);if(null==o)throw new Il(`missing choices[${r}].tool_calls[${i}].function.arguments L12: ${eML(e)}`);return{...a,id:l,type:s,function:{...d,name:u,arguments:o}}})}}:{...s,message:{...u,content:l,role:d,refusal:t.refusal??null},finish_reason:i,index:r,logprobs:n}}),crea... L13: Content-Disposition: form-data; name="`;return e.forEach((e,t)=>"string"==typeof e?r.push(n+Py(t)+`"\r ... L22: \r L23: `),n=!1,s=!1;e.on("response",e=>{let{headers:t}=e;n="chunked"===t[tGG.build(["trans","fer-e

High

Command Output Exfiltration

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

dist/yorn.cjsView on unpkg · L7

2globalThis.__yorn_dynamic_import = (m) => import(m); L3: var e,t,i,r,n,s,l,a,o,u,d,c,b,h,p,m,f,g,_,y,E,S,v,A,T,w,C,I,x,R,O,k,N,D,P,M,L,F,U,B,$,j,G,q,H,W,V,Y,K,z,Q,J,X,Z,ee,et,ei,er,en,es,el,ea,eo,eu,ed,ec,eb,eh,ep,em,ef,eg,e_,ey,eE,eS,ev... L4: `),u.push(e),u.push(`\r ... L7: `),u.push(`\r L8: `)}u.push(null)}),u}async function eNx(e,t){let i=0,r=[],n=e.getReader(),s=!1;for(;!s;){let{done:e,value:l}=await n.read();if(l&&(r.push(l),i+=l?.byteLength??0),tGL.evalInvariant(6... L9: ${eML(e)}`);if(null==s)throw new Il(`missing choices[${r}].tool_calls[${i}].type ... L11: ${eML(e)}`);if(null==o)throw new Il(`missing choices[${r}].tool_calls[${i}].function.arguments L12: ${eML(e)}`);return{...a,id:l,type:s,function:{...d,name:u,arguments:o}}})}}:{...s,message:{...u,content:l,role:d,refusal:t.

High

Cloud Metadata Access

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

dist/yorn.cjsView on unpkg · L2

7Trigger-reachable command-output exfiltration chain: manifest.bin -> dist/yorn.cjs L7: `),u.push(`\r L8: `)}u.push(null)}),u}async function eNx(e,t){let i=0,r=[],n=e.getReader(),s=!1;for(;!s;){let{done:e,value:l}=await n.read();if(l&&(r.push(l),i+=l?.byteLength??0),tGL.evalInvariant(6... L9: ${eML(e)}`);if(null==s)throw new Il(`missing choices[${r}].tool_calls[${i}].type ... L11: ${eML(e)}`);if(null==o)throw new Il(`missing choices[${r}].tool_calls[${i}].function.arguments L12: ${eML(e)}`);return{...a,id:l,type:s,function:{...d,name:u,arguments:o}}})}}:{...s,message:{...u,content:l,role:d,refusal:t.refusal??null},finish_reason:i,index:r,logprobs:n}}),crea... L13: Content-Disposition: form-data; name="`;return e.forEach((e,t)=>"string"==typeof e?r.push(n+Py(t)+`"\r ... L22: \r L23: `),n=!1,

High

Trigger Reachable Command Output Exfiltration

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

dist/yorn.cjsView on unpkg · L7

•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/yorn.cjsView on unpkg

•matchType = normalized_sha256 matchedPackage = @pilllesss/yorn@1.0.92 matchedPath = dist/yorn.cjs matchedIdentity = npm:QHBpbGxsZXNzcy95b3Ju:1.0.92 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

dist/yorn.cjsView on unpkg

•matchType = malicious_source_fingerprint_signature signature = 8eb5d4d2248a43c7 signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = @pilllesss/yorn@1.0.92 matchedPath = dist/yorn.cjs matchedIdentity = npm:QHBpbGxsZXNzcy95b3Ju:1.0.92 similarity = 1.000 shingleOverlap = 2 summary = package final verdict is malicious

High

Known Malware Source Fingerprint Signature

Source fingerprint signature matches a known malicious package signature; route for source-aware review.

dist/yorn.cjsView on unpkg

1#!/usr/bin/env node L2: globalThis.__yorn_dynamic_import = (m) => import(m); L3: var e,t,i,r,n,s,l,a,o,u,d,c,b,h,p,m,f,g,_,y,E,S,v,A,T,w,C,I,x,R,O,k,N,D,P,M,L,F,U,B,$,j,G,q,H,W,V,Y,K,z,Q,J,X,Z,ee,et,ei,er,en,es,el,ea,eo,eu,ed,ec,eb,eh,ep,em,ef,eg,e_,ey,eE,eS,ev...

Medium

Dynamic Require

Package source references dynamic require/import behavior.

dist/yorn.cjsView on unpkg · L1

•path = dist/yorn.cjs kind = oversized_source_file sizeBytes = 7670865 magicHex = [redacted]

Medium

Oversized Source File

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

dist/yorn.cjsView on unpkg

•path = dist/yorn.cjs kind = oversized_cli_entrypoint sizeBytes = 7670865 magicHex = [redacted]

Medium

Oversized Cli Entrypoint

Package contains an oversized executable-looking CLI entrypoint.

dist/yorn.cjsView on unpkg

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