Reports on Sunday morning suggested the venues for rugby's showpiece had already been agreed upon and that only three of them would be traditional rugby stadiums. Organisers have, however, described the reported list as inaccurate with a final decision not due to be announced until later this month.
"That list is not at all true. It is entirely speculation," a spokesman for the 2015 Rugby World Cup told Press Association Sport. "It is not the final list."
A long list of 17 venues was announced in October last year with five due to be cut when this month's final announcement is made.
The only rugby stadiums in that long list were the three named in the reports - Twickenham, the Millennium Stadium and Gloucester's Kingsholm ground.
The remaining venues, apart from the Olympic Stadium in Stratford, are football grounds.
"The long-list has been in the public domain for a long time," the spokesman said.
"The use of football stadiums was a part of the bid which was well documented."
Second-tier football club Leicester City's King Power Stadium is among the long list of venues but Aviva Premiership high-fliers Leicester Tigers' nearby Welford Road home was overlooked.
Other high-capacity football venues included are Wembley, Old Trafford and St James' Park.
- Sports & Recreation