registry / Remote code execution / nottuff5
nottuff5
Republished package
This report shows the evidence for nottuff5@2.0.0. 3 of 4 known versions are blocked or flagged. The newest version, 0.0.1-security, is allowed. See all versions.
AI Security Review
scanned 3mo ago · by lpm-firewall-aiNo install-time hook exists, but the shipped entrypoint directly executes unpinned remote code and installs a browser request-interception proxy that forwards request data to an unrelated host. These are concrete attack behaviors, not merely bundled-library indicators.
Static reason
One or more suspicious static signals were detected.
Trigger
A user opens `index.html` or the packaged browser application initializes its proxy controller.
Impact
An untrusted remote host can supply executable JavaScript, while proxied browser traffic may be exposed to the remote transport.
Mechanism
Off-domain script execution plus service-worker request interception and remote WebSocket proxying.
Attack narrative
The package masquerades as a generic republished npm artifact but its declared browser entry loads arbitrary remote JavaScript from an unrelated host. Its application then registers a service worker that claims browser clients and routes selected requests through a Scramjet-style proxy using a WebSocket endpoint on another unrelated domain. The controller serializes URLs, referrers, headers, and request bodies for remote processing. This creates a concrete remote-code and browser-traffic interception surface when the entry is opened.
AI rationale
No install-time hook exists, but the shipped entrypoint directly executes unpinned remote code and installs a browser request-interception proxy that forwards request data to an unrelated host. These are concrete attack behaviors, not merely bundled-library indicators.
Evidence
package.jsonindex.htmlassets/boot-CVPGRFHh.jsj6k3y8.jsct1tl/jmqwjq.jsct1tl/csbzam.jsbfjdx/757lr8.jsbfjdx/w7m632.wasm
Network endpoints2
c.vipersfutbol.com/script.jswss://21baseballacademy.com/fairs/
Decision evidence
public snapshotAI called this Malicious at 95.0% confidence as Malware with low false-positive risk.
Evidence for block
- `index.html` loads remote code from `https://c.vipersfutbol.com/script.js`.
- `assets/boot-CVPGRFHh.js` registers `j6k3y8.js` as a service worker.
- `j6k3y8.js` claims clients and routes matching fetch events.
- `assets/boot-CVPGRFHh.js` configures a request-rewriting proxy over `wss://21baseballacademy.com/fairs/`.
- `ct1tl/jmqwjq.js` forwards intercepted request URL, headers, body, and referrer through its controller RPC.
Evidence against
- `package.json` contains no preinstall, install, postinstall, or other lifecycle hooks.
- Inspected code is browser-only; no Node shell, filesystem, environment, or credential-harvesting APIs were found in the entry flow.
Behavioral surface
ChildProcessDynamicRequireFilesystemNetworkWebSocket
HighEntropyStringsMinifiedObfuscatedProtestwareUrlStrings
Source & flagged code
7 flagged · loading sourceassets/proxy-runtime-1NyFshf9.jsView file
1patternName = aws_access_key
severity = critical
line = 1
matchedText = var OQ=O...B+=`
Critical
Critical Secret
Package contains a critical-looking secret pattern.
assets/proxy-runtime-1NyFshf9.jsView on unpkg · L11patternName = aws_access_key
severity = critical
line = 1
matchedText = var OQ=O...B+=`
Critical
Secret Pattern
AWS access key ID in assets/proxy-runtime-1NyFshf9.js
assets/proxy-runtime-1NyFshf9.jsView on unpkg · L1bfjdx/757lr8.jsView file
17L18: //# sourceURL=${A}`)();n=c,o=l}else n=g.z$,o=g.Mt;r.construct&&(l.construct=function(e,t,i){let n,s=!1,a={fn:e,this:null,args:t,newTarget:i,return:e=>{s=!0,n=e},call:()=>(s=!0,n=o(...
L19: //# sourceURL=${r.url.href}`),n}return o.body;case"style":return(0,i.sM)(await o.text(),e.context,r.meta);case"sharedworker":case"worker":return(0,i.iP)(new Uint8Array(await o.arra...
Medium
Findings
2 Critical3 High6 Medium4 Low
CriticalCritical Secretassets/proxy-runtime-1NyFshf9.js
CriticalSecret Patternassets/proxy-runtime-1NyFshf9.js
HighObfuscated Payload Loaderassets/ChatPage-zoA8Z6RX.js
HighObfuscated
HighShips High Entropy Blobassets/KaTeX_Script-Regular-D3wIWfF6.woff2
MediumDynamic Requirebfjdx/757lr8.js
MediumNetwork
MediumProtestware
MediumShips Wasm Modulebfjdx/w7m632.wasm
MediumStructural Risk Force Deep Review
MediumSecret Patternassets/livekit-C0E_jLSz.js
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Affected versions and remediation
This report applies to nottuff5@2.0.0.
The versions list below shows the verdict for each recorded version.
- Avoid installing nottuff5@2.0.0. 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: .
Source advisory published: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.