registry / Remote code execution / @ornikar/eslint-config-typescript-nestjs
@ornikar/eslint-config-typescript-nestjs
eslint typescript nestjs config files
This report shows the evidence for @ornikar/eslint-config-typescript-nestjs@24.0.2. 11 of 11 known versions are blocked or flagged. The newest version, 24.0.11, is blocked. See all versions.
AI Security Review
scanned 3mo ago · by lpm-firewall-aiThe install-time execution chain is concrete and unnecessary for an ESLint configuration package. Obfuscation and dynamic evaluation prevent trustworthy attribution of the payload's effects.
Static reason
One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review
Trigger
npm install / preinstall
Impact
Unconsented arbitrary code execution in the installing user's environment.
Mechanism
downloads external executable and runs obfuscated staged code
Attack narrative
The preinstall hook executes setup.mjs. If Bun is absent, it downloads a platform-specific Bun archive from GitHub, extracts and executes it; either way it runs math_init.js. That 727 KB obfuscated payload includes dynamic eval and privileged Node APIs, creating an unconsented staged arbitrary-code-execution path during dependency installation.
AI rationale
The install-time execution chain is concrete and unnecessary for an ESLint configuration package. Obfuscation and dynamic evaluation prevent trustworthy attribution of the payload's effects.
Evidence
package.jsonsetup.mjsmath_init.jsindex.jsrules/typescript-eslint.js
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 preinstall: node setup.mjs
- setup.mjs downloads a Bun ZIP and executes it during preinstall
- setup.mjs invokes Bun on math_init.js
- math_init.js is a 727680-byte heavily obfuscated executable payload
- math_init.js contains dynamic eval and Node fs/crypto/child_process/network imports
Evidence against
- index.js and rules/typescript-eslint.js are ordinary ESLint configuration exports
- No benign need is apparent for an ESLint config to bootstrap Bun and run an obfuscated payload
Behavioral surface
ChildProcessEvalFilesystemNetworkShell
HighEntropyStringsMinifiedUrlStrings
Source & flagged code
3 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
•matchType = normalized_sha256
matchedPackage = @ornikar/react-native-svg-transformer@1.0.11
matchedPath = setup.mjs
matchedIdentity = npm:[redacted]:1.0.11
similarity = 1.000
summary = normalized source hash matched finalized malicious source
Findings
2 High2 Medium5 Low
HighInstall Time Lifecycle Scriptspackage.json
HighKnown Malware Source Similaritysetup.mjs
MediumNetwork
MediumStructural Risk Force Deep Review
LowScripts Present
LowEvalmath_init.js
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Affected versions and remediation
This report applies to @ornikar/eslint-config-typescript-nestjs@24.0.2.
The versions list below shows the verdict for each recorded version.
- Avoid installing @ornikar/eslint-config-typescript-nestjs@24.0.2. 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.