Bari Weiss — the 41-year-old “it girl” journalist who just became CBS News’ editor in chief — faces a “snake pit” as she looks to reshape the left-leaning network, sources told The Post.

Paramount Skydance boss David Ellison said Monday that he wants to restore “balance” to CBS News and its marquee shows — “60 Minutes,” “Face The Nation” and “CBS Sunday Morning” as he confirmed his hire of Weiss and the $150 million acquisition of her scrappy news site, The Free Press.

But current and former CBS News insiders said Weiss, known for her contrarian salvos against the media establishment, will face a dug-in newsroom culture that has grown used to ignoring turnaround executives — and eventually reasserting itself once they’re gone. 6

“I think there’s some CBS old timers who would rath

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