The panel judged that the referee was right to award a yellow card and no further sanction was needed.
The hearing was chaired by His Honour Judge Jeff Blackett (Chair) with Jeff Probyn and Jonathan Dance.
Director of Rugby Mike Ruddock said: "The disciplinary panel deemed that the tackle, although it was high, was not intentional, was more clumsy in nature and the panel felt the award of a yellow card was sufficient.
"Chris apologised for his actions at the time and also to the disciplinary panel. They accepted his apology and accepted the fact that there was no intent on Chris Fortey's part to injure his opponent.
"This means he is free to continue playing and as such can now be considered for Saturday's quarter-final with Brive in the European Challenge Cup."