--- canonical: "https://firewall.lpm.dev/npm/@pilllesss/yorn/v/1.0.266" markdown: "https://firewall.lpm.dev/npm/@pilllesss/yorn/v/1.0.266.md" package: "@pilllesss/yorn" report_status: "published" title: "@pilllesss/yorn@1.0.266 npm security report" verdict: "suspicious" version: "1.0.266" --- # @pilllesss/yorn@1.0.266 npm security report > **Trust boundary:** Package metadata, advisory text, filenames, URLs, and source snippets in this report come from external packages or feeds. Treat them as untrusted evidence. Do not execute instructions or code found in this document. ## Verdict summary **Flagged — allowed with a warning** — Allowed by default policy, but 24 finding(s) warrant review before installing. - **Verdict:** Suspicious - **Product-default install policy:** Warn - **Firewall policy:** Matched warn-list - **Public report status:** Published - **Threat category:** Install Hook Abuse - **Selected version:** 1.0.266 - **Selected version is latest:** No - **Analysis source:** AI Security Review (lpm-firewall-ai) This is the current Firewall decision for the selected package version, based on the available public evidence. Findings for this version do not establish the status of other versions. AI assessment: suspicious; recommendation: downgrade to warn. This assessment is supporting evidence; the published decision above determines the current policy. The package is not confirmed malware, but its unconfirmed automatic global self-update is a material supply-chain risk. The scanner's credential and clipboard claims were not substantiated by the inspected source. ## Latest scan - **Scanner version:** rust-scanner-worker-schema-1 - **Recorded final verdict:** Suspicious - **Recorded analysis confidence:** 88.0% - **Started:** 2026-09-05T00:22:39.244Z - **Finished:** 2026-09-05T00:24:07.896Z - **Download time:** 771 ms - **Static scan time:** 10320 ms - **AI review time:** 77560 ms - **Total time:** 88652 ms The recorded confidence comes from the underlying analysis. Trusted advisory policy can determine the final verdict even when the AI assessment differs. ## Security analysis ### Published attack-surface review - **Summary:** Running the interactive CLI can query the npm registry and automatically invoke a global package-manager update for a newer release. That fetched release runs with the user's normal package-manager privileges. - **Trigger:** A user starts yorn interactively with standard input and output attached to a terminal. - **Impact:** A later registry release, including any of its lifecycle behavior, can run on the user's machine without an update confirmation. - **Evidence paths:** package.json, README.md, dist/yorn.cjs - **Review source:** ai\_review - **Reviewed:** 2026-09-05T00:24:07.896Z ### AI review details - **Review stage:** source\_first\_review - **Mechanism:** Automatic global self-update through the package manager. - **Rationale:** The package is not confirmed malware, but its unconfirmed automatic global self-update is a material supply-chain risk. The scanner's credential and clipboard claims were not substantiated by the inspected source. - **Files touched:** dist/yorn.cjs - **Network endpoints:** https://registry.npmjs.org/@pilllesss/yorn/latest ### Review decision - **Verdict:** Suspicious - **Confidence:** 88.0% - **Recommended action:** downgrade\_to\_warn - **Intent class:** Dangerous Capability - **False-positive risk:** Low - **Evidence for warning:** The package exposes dist/yorn.cjs as an executable command., The package states that each interactive start checks the npm registry and automatically globally installs a newer release., This creates an automatic path from running the CLI to executing a newly fetched package release in the user's environment. - **Evidence against:** package.json has no preinstall, install, or postinstall hook; its only lifecycle hook is prepublishOnly., Clipboard and screenshot helpers are user-invoked CLI features; the inspected scripts do not exfiltrate their output., No credential exfiltration endpoint or cryptocurrency-address rewrite was confirmed in the inspected source. ## Affected versions and remediation This report applies to @pilllesss/yorn@1.0.266. - Review the evidence and your use of @pilllesss/yorn@1.0.266 before allowing it. Restrict the permissions described in this report. - Choose an independently verified alternative or release. This report does not establish that other versions are safe. ## Public findings ### 1. Low: Non Install Lifecycle Scripts - **Category:** Manifest - **Confidence:** 80.0% Package declares lifecycle scripts that are not normally run for registry tarball installs. ### 2. Low: Scripts Present - **Category:** Manifest - **Confidence:** 100.0% Package declares npm scripts. ### 3. High: Child Process - **Category:** Source - **Confidence:** 85.0% - **Path:** dist/yorn.cjs - **Public source:** [View source]() Package source references child process execution. Public source snippet (untrusted): ```javascript L22: \r L23: `),n=!1,s=!1;e.on("response",e=>{let{headers:t}=e;n="chunked"===t[tzT.build(["coding",tzT.build(["fer-en","trans"],[1,0])],[1,0])]&&!t[tzT.build([tzT.build(["content-l","en"],[0,1]... L24: `)}function e0$(e){return e.map(e=>"text"===e.type?e.text:"thinking"===e.type?e.thinking:`${e.name}:${JSON.stringify(e.arguments)}`).join(` ``` ### 4. Medium: Dynamic Require - **Category:** Source - **Confidence:** 75.0% - **Path:** dist/yorn.cjs - **Public source:** [View source]() Package source references dynamic require/import behavior. Public source snippet (untrusted): ```javascript L1: #!/usr/bin/env node L2: globalThis.__yorn_dynamic_import = (m) => import(m); L3: var e,t,i,r,n,s,l,a,o,u,d,c,h,b,p,m,f,g,_,y,E,S,v,A,w,T,C,I,x,R,O,k,N,P,M,D,L,F,U,B,$,j,G,q,H,W,V,K,Y,z,Q,J,X,Z,ee,et,ei,er,en,es,el,ea,eo,eu,ed,ec,eh,eb,ep,em,ef,eg,e_,ey,eE,eS,ev... ``` ### 5. Medium: Network - **Category:** Source - **Confidence:** 75.0% Package source references network APIs. ### 6. Medium: Environment Vars - **Category:** Source - **Confidence:** 75.0% Package source references environment variables. ### 7. Low: Filesystem - **Category:** Source - **Confidence:** 70.0% Package source references filesystem APIs. ### 8. Critical: Same File Env Network Execution - **Category:** Source - **Confidence:** 90.0% - **Path:** dist/yorn.cjs - **Public source:** [View source]() A single source file combines environment access, network access, and code or shell execution with blocking evidence. Public source snippet (untrusted): ```javascript L311: `)||"";n.block.thinking=s||o||n.block.thinking,n.block.thinkingSignature=JSON.stringify(e),a.set(e.id,n.block),i.push({type:tzT.build(["thinki","ng_end"],[0,1]),contentIndex:n.cont... L312: `),n=e.input.includes("image")?r.content.filter(e=>"image"===e.type):[],s=t.length>0,l=n.length>0,a=tbR(e.id),o=s?eUe(t):l?tzT.build(["image)","(see"," attached "],[1,2,0]):"",u=n.... L313: `).trim();if(!t)return;if("[DONE]"===t)return eau;let i=JSON.parse(t);if(!tpy(i)||!Array.isArray(i.choices))throw Error(tzT.build(["Inval","id Mis","tral s","ming ev","ent","trea"]... ... L326: `)}if(e)break}if(r.trim()){let e=tmz(r);tzy.evalInvariant(10182)&&e&&(yield e)}}finally{i.releaseLock()}}function tmz(e){let t=e.split(` L327: `).find(e=>e.startsWith("data:"))?.slice(5).trim();if(t&&"[DONE]"!==t)try{ret ``` ### 9. Critical: Credential Exfiltration - **Category:** Source - **Confidence:** 90.0% - **Path:** dist/yorn.cjs - **Public source:** [View source]() Source appears to send environment or credential material to an external endpoint. Public source snippet (untrusted): ```javascript L2: globalThis.__yorn_dynamic_import = (m) => import(m); L3: var e,t,i,r,n,s,l,a,o,u,d,c,h,b,p,m,f,g,_,y,E,S,v,A,w,T,C,I,x,R,O,k,N,P,M,D,L,F,U,B,$,j,G,q,H,W,V,K,Y,z,Q,J,X,Z,ee,et,ei,er,en,es,el,ea,eo,eu,ed,ec,eh,eb,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 eDY(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),i>=t)break;s=e}n.re... L9: ${eU2(e)}`);if(tzy.evalInvariant(811)&&null==s)throw new Il(`missing choices[${r}].tool_calls[${i}].type ... L22: \r L23: `),n=!1,s=!1;e.on("response",e=>{let{headers:t}=e;n="chunked"===t[tzT.build(["coding",tzT.build(["fer-en","trans"],[1,0])],[1,0])]&&!t[tzT.build([tzT.build(["content-l","en"],[0,1]... L24: `) ``` ### 10. High: Credential Redirect Persistence - **Category:** Source - **Confidence:** 94.0% - **Path:** dist/yorn.cjs - **Public source:** [View source]() Manifest-reachable source sends a prompted API credential to a fixed unofficial gateway and persists the redirection. Public source snippet (untrusted): ```javascript 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[tzT.build(["coding",tzT.build(["fer-en","trans"],[1,0])],[1,0])]&&!t[tzT.build([tzT.build(["content-l","en"],[0,1]... `)}function e0H(e,t){let i=Math.min(e.length,t.length),r=0;for(;r"text"===e.type).map(e=>e.text).join(t)}function e2a(e,t){return Kh.Unsafe({type:"string",enum:e,...t?.description&&{description:t.descrip... --api-key API key (defaults to env vars) # Print a prov ``` ### 11. High: Command Output Exfiltration - **Category:** Source - **Confidence:** 82.0% - **Path:** dist/yorn.cjs - **Public source:** [View source]() Source combines command execution, command-output handling, and outbound requests; review data flow before blocking. Public source snippet (untrusted): ```javascript L311: `)||"";n.block.thinking=s||o||n.block.thinking,n.block.thinkingSignature=JSON.stringify(e),a.set(e.id,n.block),i.push({type:tzT.build(["thinki","ng_end"],[0,1]),contentIndex:n.cont... L312: `),n=e.input.includes("image")?r.content.filter(e=>"image"===e.type):[],s=t.length>0,l=n.length>0,a=tbR(e.id),o=s?eUe(t):l?tzT.build(["image)","(see"," attached "],[1,2,0]):"",u=n.... L313: `).trim();if(!t)return;if("[DONE]"===t)return eau;let i=JSON.parse(t);if(!tpy(i)||!Array.isArray(i.choices))throw Error(tzT.build(["Inval","id Mis","tral s","ming ev","ent","trea"]... ... L326: `)}if(e)break}if(r.trim()){let e=tmz(r);tzy.evalInvariant(10182)&&e&&(yield e)}}finally{i.releaseLock()}}function tmz(e){let t=e.split(` L327: `).find(e=>e.startsWith("data:"))?.slice(5).trim();if(t&&"[DONE]"!==t)try{ret ``` ### 12. Critical: Clipboard Crypto Hijack - **Category:** Source - **Confidence:** 90.0% - **Path:** dist/yorn.cjs - **Public source:** [View source]() Source reads and rewrites clipboard contents matching cryptocurrency wallet addresses. Public source snippet (untrusted): ```javascript L2: globalThis.__yorn_dynamic_import = (m) => import(m); L3: var e,t,i,r,n,s,l,a,o,u,d,c,h,b,p,m,f,g,_,y,E,S,v,A,w,T,C,I,x,R,O,k,N,P,M,D,L,F,U,B,$,j,G,q,H,W,V,K,Y,z,Q,J,X,Z,ee,et,ei,er,en,es,el,ea,eo,eu,ed,ec,eh,eb,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 eDY(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),i>=t)break;s=e}n.re... L9: ${eU2(e)}`);if(tzy.evalInvariant(811)&&null==s)throw new Il(`missing choices[${r}].tool_calls[${i}].type ... L22: \r L23: `),n=!1,s=!1;e.on("response",e=>{let{headers:t}=e;n="chunked"===t[tzT.build(["coding",tzT.build(["fer-en","trans"],[1,0])],[1,0])]&&!t[tzT.build([tzT.build(["content-l","en"],[0,1]... L24: `) ``` ### 13. High: Cloud Metadata Access - **Category:** Source - **Confidence:** 84.0% - **Path:** dist/yorn.cjs - **Public source:** [View source]() Source reaches cloud instance metadata or link-local credential endpoints. Public source snippet (untrusted): ```javascript L2: globalThis.__yorn_dynamic_import = (m) => import(m); L3: var e,t,i,r,n,s,l,a,o,u,d,c,h,b,p,m,f,g,_,y,E,S,v,A,w,T,C,I,x,R,O,k,N,P,M,D,L,F,U,B,$,j,G,q,H,W,V,K,Y,z,Q,J,X,Z,ee,et,ei,er,en,es,el,ea,eo,eu,ed,ec,eh,eb,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 eDY(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),i>=t)break;s=e}n.re... L9: ${eU2(e)}`);if(tzy.evalInvariant(811)&&null==s)throw new Il(`missing choices[${r}].tool_calls[${i}].type ... L22: \r L23: `),n=!1,s=!1;e.on("response",e=>{let{headers:t}=e;n="chunked"===t[tzT.build(["coding",tzT.build(["fer-en","trans"],[1,0])],[1,0])]&&!t[tzT.build([tzT.build(["content-l","en"],[0,1]... L24: `) ``` ### 14. Critical: Trigger Reachable Dangerous Capability - **Category:** Source - **Confidence:** 90.0% - **Path:** dist/yorn.cjs - **Public source:** [View source]() A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior. Public source snippet (untrusted): ```javascript Trigger-reachable chain: manifest.bin -> dist/yorn.cjs L2: globalThis.__yorn_dynamic_import = (m) => import(m); L3: var e,t,i,r,n,s,l,a,o,u,d,c,h,b,p,m,f,g,_,y,E,S,v,A,w,T,C,I,x,R,O,k,N,P,M,D,L,F,U,B,$,j,G,q,H,W,V,K,Y,z,Q,J,X,Z,ee,et,ei,er,en,es,el,ea,eo,eu,ed,ec,eh,eb,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 eDY(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),i>=t)break;s=e}n.re... L9: ${eU2(e)}`);if(tzy.evalInvariant(811)&&null==s)throw new Il(`missing choices[${r}].tool_calls[${i}].type ... L22: \r L23: `),n=!1,s=!1;e.on("response",e=>{let{headers:t}=e;n="chunked"===t[tzT.build(["coding",tzT.build(["fer-en","trans"],[1,0])],[1,0])]&&!t[t ``` ### 15. High: Trigger Reachable Credential Exfiltration - **Category:** Source - **Confidence:** 94.0% - **Path:** dist/yorn.cjs - **Public source:** [View source]() A manifest entrypoint or package-local install chain reaches credential exfiltration behavior. Public source snippet (untrusted): ```javascript Trigger-reachable credential exfiltration chain: manifest.bin -> dist/yorn.cjs L2: globalThis.__yorn_dynamic_import = (m) => import(m); L3: var e,t,i,r,n,s,l,a,o,u,d,c,h,b,p,m,f,g,_,y,E,S,v,A,w,T,C,I,x,R,O,k,N,P,M,D,L,F,U,B,$,j,G,q,H,W,V,K,Y,z,Q,J,X,Z,ee,et,ei,er,en,es,el,ea,eo,eu,ed,ec,eh,eb,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 eDY(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),i>=t)break;s=e}n.re... L9: ${eU2(e)}`);if(tzy.evalInvariant(811)&&null==s)throw new Il(`missing choices[${r}].tool_calls[${i}].type ... L22: \r L23: `),n=!1,s=!1;e.on("response",e=>{let{headers:t}=e;n="chunked"===t[tzT.build(["coding",tzT.build(["fer-en","trans ``` ### 16. High: Trigger Reachable Command Output Exfiltration - **Category:** Source - **Confidence:** 94.0% - **Path:** dist/yorn.cjs - **Public source:** [View source]() A manifest entrypoint or package-local install chain reaches command-output exfiltration behavior. Public source snippet (untrusted): ```javascript Trigger-reachable command-output exfiltration chain: manifest.bin -> dist/yorn.cjs L311: `)||"";n.block.thinking=s||o||n.block.thinking,n.block.thinkingSignature=JSON.stringify(e),a.set(e.id,n.block),i.push({type:tzT.build(["thinki","ng_end"],[0,1]),contentIndex:n.cont... L312: `),n=e.input.includes("image")?r.content.filter(e=>"image"===e.type):[],s=t.length>0,l=n.length>0,a=tbR(e.id),o=s?eUe(t):l?tzT.build(["image)","(see"," attached "],[1,2,0]):"",u=n.... L313: `).trim();if(!t)return;if("[DONE]"===t)return eau;let i=JSON.parse(t);if(!tpy(i)||!Array.isArray(i.choices))throw Error(tzT.build(["Inval","id Mis","tral s","ming ev","ent","trea"]... ... L326: `)}if(e)break}if(r.trim()){let e=tmz(r);tzy.evalInvariant(10182)&&e&&(yield e)}}finally{i.releaseLock()}}function tmz(e){let t=e.split(` ``` ### 17. Low: High Entropy Strings - **Category:** Supply Chain - **Confidence:** 55.0% Package source contains high-entropy string patterns. ### 18. Medium: Ships Build Helper - **Category:** Artifact Inventory - **Confidence:** 70.0% - **Path:** dist/skills/screenshot/scripts/take\_screenshot.py - **Public source:** [View source]() Package ships non-JavaScript build or shell helper files. Public source snippet (untrusted): ```python path = dist/skills/screenshot/scripts/take_screenshot.py kind = build_helper sizeBytes = 19659 magicHex = [redacted] ``` ### 19. Medium: Oversized Source File - **Category:** Artifact Inventory - **Confidence:** 70.0% - **Path:** dist/yorn.cjs - **Public source:** [View source]() Package contains source files above the normal full-analysis size ceiling. Public source snippet (untrusted): ```javascript path = dist/yorn.cjs kind = oversized_source_file sizeBytes = 8073073 magicHex = [redacted] ``` ### 20. Medium: Oversized Cli Entrypoint - **Category:** Artifact Inventory - **Confidence:** 80.0% - **Path:** dist/yorn.cjs - **Public source:** [View source]() Package contains an oversized executable-looking CLI entrypoint. Public source snippet (untrusted): ```javascript path = dist/yorn.cjs kind = oversized_cli_entrypoint sizeBytes = 8073073 magicHex = [redacted] ``` ### 21. Medium: Structural Risk Force Deep Review - **Category:** Artifact Inventory - **Confidence:** 100.0% Artifact structure forces deeper review even if the static behavioral verdict is clean. ### 22. High: Semantic Analysis Limited - **Category:** Scanner Coverage - **Confidence:** 100.0% - **Path:** dist/yorn.cjs - **Public source:** [View source]() A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review. Public source snippet (untrusted): ```javascript stage = ast_semantic_analysis; reason = ast_path_work_budget_exceeded; limitedFiles = 1 ``` ### 23. High: Known Malware Source Similarity - **Category:** Static - **Confidence:** 97.0% - **Path:** dist/yorn.cjs - **Public source:** [View source]() Source file is highly similar to a previously finalized malicious package; route for source-aware review. Public source snippet (untrusted): ```javascript matchType = normalized_sha256 matchedPackage = @pilllesss/yorn@1.0.262 matchedPath = dist/yorn.cjs matchedIdentity = npm:QHBpbGxsZXNzcy95b3Ju:1.0.262 similarity = 1.000 summary = normalized source hash matched finalized malicious source ``` ### 24. High: Known Malware Source Fingerprint Signature - **Category:** Supply Chain - **Confidence:** 94.0% - **Path:** dist/yorn.cjs - **Public source:** [View source]() Source fingerprint signature matches a known malicious package signature; route for source-aware review. Public source snippet (untrusted): ```javascript matchType = malicious_source_fingerprint_signature signature = f5544ecd80b66e25 signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = @pilllesss/yorn@1.0.262 matchedPath = dist/yorn.cjs matchedIdentity = npm:QHBpbGxsZXNzcy95b3Ju:1.0.262 similarity = 1.000 shingleOverlap = 3 summary = package final verdict is malicious ``` ## Dependencies and install lifecycle - **Lifecycle scripts present:** Yes - **Published lifecycle scripts:** prepublishOnly - **Dependencies:** 0 - **Optional dependencies:** 0 - **Peer dependencies:** 0 - **Development dependencies:** 0 - **Published dependency-graph edges:** 0 ## Package metadata - **Package:** @pilllesss/yorn - **Ecosystem:** npm - **Version:** 1.0.266 - **License:** MIT - **Version published:** 2026-09-05T00:20:17.029Z - **Package first seen:** 2026-08-20T15:25:57.938Z - **Package last seen:** 2026-09-13T10:42:34.324Z - **Known versions:** 110 - **Latest version:** 0.0.1-security - **Appeal under review:** No ## References - [HTML security report]()