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Britney Spears‘ home popped up on the market Monday — which got her fans thinking she was ready to get the hell outta Cali … but she isn’t going anywhere, TMZ has learned.

Eagle-eyed sleuths probably noticed BS’ Thousand Oaks mansion show up on real estate sites as being listed for sale Monday — and it looked like she was trying to unload it for just under $9 million … at least based on the public listing.

However, despite the fact this info got published and went wide everywhere — multiple sources with direct knowledge tell us the whole thing was a hack … and Britney is NOT packing her bags.

We’ve learned someone hacked into the Multiple Listing Service — MLS — and posted the fake listing.  Other real estate sites, including Realtor.com and Zillow, then picked it up and the fake listing spread like wildfire.

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Our sources tell us Brit’s management team noticed the listing Monday — which had some big wig real estate agents attached. We’re told Brit’s team hit these agents up … and the agents said they had no involvement whatsoever.

Unclear who hacked the MLS, but in any case … we’re told the powers that be have already yanked it off the service.

Mystery solved!