registry / Credential exfiltration / @servicetitan/web-components
@servicetitan/web-components
Framework to build, register, and load Microfrontends into host applications
This report shows the evidence for @servicetitan/web-components@38.1.4. 7 of 23 known versions are blocked or flagged. The newest version, 40.2.2, is allowed. See all versions.
AI Security Review
scanned 3mo ago · by lpm-firewall-aiThis is concrete malicious preinstall behavior: a web-components package downloads an interpreter to execute an unrelated obfuscated token-harvesting payload. The benign application runtime code does not mitigate the install-time attack.
Static reason
One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review; previous stored version diff introduced dangerous source
Trigger
npm installation invokes the preinstall hook.
Impact
The installer user's GitHub credentials may be collected and exfiltrated.
Mechanism
downloaded interpreter executes obfuscated credential-harvesting payload
Attack narrative
On npm install, package.json launches setup.mjs. If Bun is absent, setup.mjs downloads a Bun binary from GitHub, extracts it to a temporary directory, and executes math_init.js. That large obfuscated payload contains GitHub token collection paths (`ghtoken`, `ghs_old`, `ghs_jwt`), child-process use, and outbound request/upload logic, creating an unconsented credential-exfiltration chain.
AI rationale
This is concrete malicious preinstall behavior: a web-components package downloads an interpreter to execute an unrelated obfuscated token-harvesting payload. The benign application runtime code does not mitigate the install-time attack.
Evidence
package.jsonsetup.mjsmath_init.jsdist/index.jssrc/utils/load-scripts.ts/etc/os-releasetemporary Bun download directory
Network endpoints1
github.com/oven-sh/bun/releases/download/bun-v1.3.13/
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- package.json runs `node setup.mjs` as preinstall.
- setup.mjs downloads Bun and executes math_init.js during installation.
- math_init.js is a 728KB obfuscated payload, unrelated to the component library.
- math_init.js enumerates `ghtoken`, `ghs_old`, and `ghs_jwt` credentials.
- math_init.js imports child_process and performs outbound fetch/upload logic.
Evidence against
- dist/ and src/ implement the stated web-component loader.
- No malicious behavior was found in the published runtime entrypoint dist/index.js.
Behavioral surface
ChildProcessEnvironmentVarsEvalFilesystemNetworkShell
HighEntropyStringsMinifiedUrlStrings
NoLicense
Source & flagged code
5 flagged · loading sourcepackage.jsonView file
•scripts.preinstall = node setup.mjs
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkgmath_init.jsView file
1// @bun @bun-cjs
L2: var MmgoCP,etDiOOB,JqTtnbZ,bc3Kak,ZQmUTyQ,TTUgga,MDX6yrw,h8wMJNB,CabwE2L,x5ErqV;function WV8StW(MmgoCP,etDiOOB,JqTtnbZ){for(JqTtnbZ=0x0;JqTtnbZ<etDiOOB;JqTtnbZ++)MmgoCP.push(MmgoCP...
Low
Eval
Package source references a known benign dynamic code generation pattern.
math_init.jsView on unpkg · L1setup.mjsView file
1Manifest entrypoint (scripts.preinstall) carries capability families absent from dist/build output: execution+network
L1: #!/usr/bin/env node
L2: import { execFileSync } from "child_process";
L3: import _0x488df8 from "fs";
L4: import _0x52943e from "https";
L5: import _0x24db8d from "os";
...
L50: function ra() {
L51: const _0x51cd53 = process.platform + "-" + process.arch;
L52: const _0x3ab5c4 = PM[_0x51cd53];
...
L218: } else if (_0xc0d7d2 === 8) {
L219: _0x27994e = _0x548d91.inflateRawSync(_0x5975df);
L220: } else {
Findings
4 High3 Medium6 Low
HighInstall Time Lifecycle Scriptspackage.json
HighEntrypoint Build Divergencesetup.mjs
HighKnown Malware Source Similaritysetup.mjs
HighPrevious Version Dangerous Deltasetup.mjs
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowScripts Present
LowEvalmath_init.js
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
LowNo License
Affected versions and remediation
This report applies to @servicetitan/web-components@38.1.4.
The versions list below shows the verdict for each recorded version.
- Avoid installing @servicetitan/web-components@38.1.4. 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.