The dollar extended losses against the euro and hit a session low on Wednesday as stock gains accelerated following U.S. ISM services data, eroding the greenback's safe-haven appeal.

The U.S. service sector grew in October for the second consecutive month but at a slower pace than forecast, according to a report released on Wednesday.

The euro rose as high as $1.4838 EUR=, according to Reuters data, after briefly paring gains after the ISM. It last traded up 0.8 percent at $1.4831.

The dollar was at 90.61 yen JPY= compared with 90.81 before the report.