Language: TypeScript
Label: vulnerable
CWE: CWE-331 \u2014 Insufficient Entropy
The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others.

Code:
function __processMessage(modules, message) {
  const { config, crypto } = modules;
  if (!config.cipherKey) return message;

  try {
    return crypto.decrypt(message);
  } catch (e) {
    return message;
  }
}