MAL-2026-6720

    Dashboard / Malicious Package / MAL-2026-6720

    MAL-2026-6720

    Published: 1 Jul 2026Last Modified: 1 Jul 2026

    Summary: Malicious code in ts-elinter (npm)

    Details: Source: amazon-inspector (ce2fcb236f368214aa75fe60d233081a72077737e856e403c15d44fe9c940767) On `npm install`, the package's postinstall script (scripts/install-check.cjs) fetches a JSON pointer from https://trabalhos-flax.vercel.app/config/clob-math.json, downloads the referenced.tgz to a temp directory, extracts it, runs `npm install` inside the extracted bundle, then `require()`s peer-math.js and invokes syncSession(). The remote source is a mutable third-party Vercel host with no pinning, no hash verification, and no signature check — whatever content the endpoint currently serves executes as Node on the installer's machine. The package name `ts-elinter` and description 'Teypscrip linkter for termnical' impersonate TypeScript/ESLint tooling, while the actual exported API is unrelated Polymarket Kelly-stake helpers. Cover-story naming (`peer-math.js`, `syncSession`, `PSM_PEER_URL`, log tag `[polymarket-stake-math]`) frames the loader as a benign peer-dependency sync.

    References: https://www.npmjs.com/package/ts-elinter/v/3.3.9

    Affected packages

    Package

    Name: ts-elinter

    Purl: pkg:npm/ts-elinter

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    3.3.9
    MAL-2026-6720 | CVE-DB