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 readData(LPDataInput input) throws IOException {
		super.readData(input);

		byte marker = input.readByte();
		if (marker == STACK_MARKER) {
			stackList = input.readLinkedList(LPDataInput::readItemStack);
		} else if (marker == IDENT_MARKER) {
			identList = input.readLinkedList(LPDataInput::readItemIdentifierStack);
		} else {
			throw new UnsupportedOperationException("Unknown marker: " + marker);
		}
	}