Language: JavaScript
Label: safe
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:
                        transform: function (chunk, _, cb) {
                            if (!inited) {
                                inited = true;
                                this.push(Buffer.concat([bIv, chunk]));
                            }
                            else {
                                this.push(chunk);
                            }
                            cb();
                        },