MAL-2026-14199
Malicious code in txs-runner-sdk (npm)
Details
--- _-= Per source details. Do not edit below this line.=-_
## Source: amazon-inspector (db9d5d94b7f75bbe8bca33eb382bfb986e68b7f0307cad7e9626da103192f254) The package advertises itself as generating random transaction data, but its main API method getTransactions() invokes load_transaction_data(), which reads database.js (a JSON file whose records carry base64-encoded 'mark' fields), applies a per-character Caesar shift keyed by an item count, base64-decodes the concatenated result, and passes the resulting bytes to eval() inside a try/catch. The.js-suffixed data file, the double-encoded payload smuggled as product 'mark' fields, and the mismatch between the stated purpose (random data generation) and the presence of dynamic code execution together form a loader/dropper pattern: any consumer that calls the advertised API executes attacker-authored JavaScript in the calling process. Declared dependencies include axios and python-shell, consistent with a stager that fetches or spawns further payloads once the decoded code runs.
Are you affected?
Enter the version of the package you're using.
Affected packages
No fixed version published yet for txs-runner-sdk (npm). Pin to a known-safe version or switch to an alternative.