While Sanders didn't explicitly deny the report, she said that CBS didn't speak to her before running the story.
CBS reported she planned to leave by year's end and that Shah had not decided on a departure date.
Sanders responded shortly after in a tweet, claiming she was at her "daughter's year-end Kindergarten event" when CBS News "ran a story about [her] "plans to leave the WH" without even talking to" her.
Sanders took over briefing duties full-time from Sean Spicer after he resigned.
Others have departed the White House recently including Hope Hicks, Josh Raffel, Tom Bossert, Michael Anton, John McEntee, Cliff Simms, Steven Cheung, Kaelan Dorr, Natalie Strom, and Tyler Ross. The administration consolidated duties in many instances and also simply left some positions open. Last week, Mr. Kelly told visiting senators that the White House was "a miserable place to work", according to a person with direct knowledge of the comment.
Over the course of the Trump administration, the White House has consolidated its workforce, eliminating jobs and assigning multiple portfolios of responsibility to individual staffers.