Language: Java
Label: vulnerable
CWE: CWE-502 \u2014 Deserialization of Untrusted Data
The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid.

Code:
	public void writeData(LPDataOutput output) throws IOException {
		output.writeByte(mode.ordinal());
		output.writeInt(additions.length);
		for (Object addition : additions) {
			ByteArrayOutputStream bos = new ByteArrayOutputStream();
			ObjectOutput out = new ObjectOutputStream(bos);
			out.writeObject(addition);
			output.writeByteArray(bos.toByteArray());
		}
	}