Cavani scored both goals in Uruguay’s 2-1 last-16 win over Portugal before being helped off the pitch by Cristiano Ronaldo after picking up a calf problem.
The Paris Saint-Germain player trained separately from his team-mates on Thursday ahead of Friday’s last-eight clash with Les Bleus in Nizhny Novgorod.
Tabarez believes the media have been given sufficient information about Cavani’s condition and is unhappy about constant speculation and the perceived agendas of some journalists.
“We issued a press release explaining exactly what kind of exams he had to go through and nobody respected it. People started asking other professionals, people who are not here and don’t know what is going on,” said Tabarez at his pre-match press conference.
“I’m not going to say anything else about Cavani because I have already given enough information and I don’t want to get into games that are convenient for certain journalists who have a style I don’t share.
“In less than 24 hours you will know who will play and who will be on the bench.
“I’m not going to change my mind. We don’t want to create any doubts or rumours.
“I apologise, I am not telling you that information. I cannot give you all of my information as I do not get all the information from the French team.”
Cavani’s absence would be a massive blow for the two-time winners.
The 31-year-old has continued his prolific partnership with Luis Suarez in Russia, scoring three times to help his team record four successive victories.
Tabarez, who is set to take charge of his 186th game as national team manager and 21st at the World Cup, has been impressed with his top-scorer’s attempts to regain fitness.
“He’s very sad because he’s suffering an injury during the World Cup – he’s a very important player for us and he was playing very well,” added the 71-year-old.
“As soon as he got injured, he started working hard to recover.
“He is concentrating on his dreams and his hopes, and that’s what he’s doing right now.”
Tabarez is aiming to lead Uruguay to the semi-finals of the tournament for the second time following their fourth-placed finish in South Africa in 2010.
France, world champions in 1998, are also unbeaten following their first four games and will provide a stern test.
A semi-final against Brazil or Belgium awaits the winner, and Tabarez believes his underdogs can cause an upset.
“We are playing against very strong opponents. French football is very strong in general but this team specifically is really, really strong,” he said.
“It’s not going to be easy and we’re not conceited at all but we don’t think it’s impossible; it’s difficult but not impossible.
“We’ll see what happens. There is a chance and that’s what we are going to focus on, that’s what we believe.”
Some of Egypt’s players are facing fines and bans for doing unauthorised interviews during the World Cup, Egypt Football Association chief Hany Abo Rida has revealed.
Reportedly, several players took money, up to $5,000, to do interviews with a Saudi-0wned TV channel.
“I instructed Ihab Leheita [the Egypt national team director] to take a firm stance over the interviews that were done for a satellite television channel,” Rida said earlier this week, according to Egyptian daily Ahram.
“These interviews violate the [EFA’s] sponsorship deals,” he added. “Some players will be internationally banned for up to a year and will also be fined.”
Rida did not reveal which players were being reprimanded.
The news caps off a disappointing tournament for Egypt, who lost all three of their games in their first appearance at football’s showpiece event since 1990.
From a public relations standpoint, England’s Russian summer has been a runaway triumph – with the bond between supporters and players tangibly rebuilt and scenes of riotous celebrations marking a penalty shoot-out victory over Colombia that has been 22 years in the making.
But Southgate, whose stock is rising with each passing day and every adulatory social media meme, is approaching Saturday’s eagerly anticipated clash against Sweden with a sense of perspective.
“We have made progress but we haven’t achieved success yet,” he told FIFA.com.
“My feet are firmly on the ground. I’ve been in football for 30 years, and I’ve had plenty of ups and downs.
“That night (against Colombia) was a great night for all of us but my focus was pretty quickly on to Sweden because we are in the last eight of a World Cup.
— England (@England) July 5, 2018
“We want more of those experiences and we want to go as far as we possibly can.”
At the outset of the competition, consensus suggested a place in the last eight would be a good effort from Southgate’s youthful squad. But the goalposts have been shifting in recent days and even the level-headed manager has shifted his sights.
He told ITV: “We’re at stage where we could go home now, get a nice reception – we’ve won a knock-out game, a shoot-out – or we can go stages further and really have made a difference and created our own history.
“We said before we came we wanted to make the nation proud, a way of us behaving to do that, but we needed to win some football matches as well.”
Southgate also revealed that the enjoyment of fans back home was having a clear impact on the squad.
The number of travelling fans has been well down on recent tournaments, for a variety of reasons, but the celebratory scenes of supporters the length and breadth of England have not gone unnoticed in camp.
“The power of football to connect people can’t be underestimated,” he said.
“It’s nice to see that people are happy, are talking about it at work and it’s a privilege to have that opportunity.”
“The players are excited because a lot of their experiences with England, they’ve felt isolated in camp and had to fight against the tide. They feel supported and a real collective energy.
“The players are responding to the warmth, the encouragement. The team talks have to change, there’s a warm glow of having done well in games.
Southgate also sounded a note of caution about Sweden, whose current FIFA ranking of 24 places them 12 behind England and eight below Colombia.
That is potentially misleading given the qualified ahead of Holland, beat Italy in a play-off and topped the group which Germany finished bottom of here in Russia.
“They’re a team I respect enormously,” Southgate said.
“They have a very clear identity and have had absolutely incredible results, really, against more favoured countries with bigger reputations.
“I’ve played enough matches against Sweden over the years and watched them enough in tournaments to know how strong they are.”