Everton and Liverpool have been charged by the Football Association with failing to control their players after a reserve match on 10 October.
It relates to a melee involving players from both sides after Liverpool keeper Jerzy Dudek was sent off for his reaction to Victor Anichebe's tackle.
The FA issued the charge after reviewing a video of Everton's 2-1 win.
As well as both clubs, Dudek has been charged with improper conduct for not leaving the field of play promptly.
That could potentially leave the Reds short of goalkeeping cover, as Dudek is facing a possible five-match ban.
The 33-year-old Pole was initially facing a three-match ban for violent conduct, but the new charge could mean that is increased by two matches.
The sending off came after a challenge on Dudek by Everton youngster Victor Anichebe.
Liverpool's Scott Carson and Chris Kirkland, both England squad goalkeepers, are out on loan with Charlton and Wigan respectively and cannot be recalled until January at the earliest.
Dudek's ban could leave Liverpool with youth team goalkeeper David Martin - son of former West Ham defender Alvin Martin - as the only cover for first-choice Jose Reina.
With Everton having a suspended FA sentence hanging over them for a first-team incident against Middlesbrough, they could be fined about £20,000.
Liverpool could be fined around £10,000.
"We have been charged with a breach of FA rule E20, which is failure to control our players," said Everton club secretary David Harrison.
"We have until 1 November to reply and we also have the opportunity to request a personal hearing before the commission, should we wish to do so."