Leipzig have won two German Cups since the Bavarians' last final appearance but Bayern had form over the visitors this season, winning their two Bundesliga clashes by a combined score of 11-1.
Bayern Munich sporting director Max Eberl on Monday confirmed the club are in talks to extend Harry Kane's deal at the club.
Unbeaten Bayern have dropped just four points on their way to a record-equalling tally of 50 after 18 games.
Vincent Kompany's Bayern Munich enjoy an 11-point lead at the top of the Bundesliga at the halfway point of the 2025-26 season.
An understrength Bayern Munich coasted to a 4-0 away win over lowly Heidenheim on Sunday, restoring their nine-point lead atop the table in Harry Kane's first match as captain.
Harry Kane converted a penalty with three minutes remaining to save Bayern Munich's blushes in a 2-2 home draw against last-placed Mainz in the Bundesliga on Sunday.
Harry Kane came off the bench to score a hat-trick as Bayern Munich thrashed Stuttgart 5-0 on a day of late drama in the Bundesliga on Saturday.
Harry Kane scored his 25th Bayern Munich goal of the season and gave away a penalty as he led his team to the German Cup quarterfinals with a 3-2 win over Union Berlin on Wednesday.
Michael Olise scored twice and set up three more goals as Bayern Munich came from two down to beat Freiburg 6-2 at home in the Bundesliga on Saturday.
Harry Kane snatched Bayern Munich a point in stoppage time but their record-breaking start to a season came to an end in a 2-2 draw at Union Berlin in the Bundesliga.