In Starfield, stolen items can only be sold to specific vendors known as the Trade Authority, who operate on various planets and stations throughout the Settled Systems. Some key locations to sell stolen goods include:

• The Trade Authority building on planets like Neon City, where a vendor named Kolman Lang operates

• The Crimson Fleet ship called The Key, located on planet Neon

• The Den, a space station in the Wolf system orbiting the planet Chthonia. This station has a Trade Authority kiosk where you can sell stolen items without being scanned for contraband

• Vendors affiliated with the Crimson Fleet on The Eye in the Kryx system also buy stolen goods

Additional tips:

• Stolen items have a red "stolen" tag in your inventory and cannot be sold to normal vendors

• The Den and Trade Authority vendors have a limited amount of credits, but their funds reset after 24 hours, allowing you to sell more

• You can launder stolen items by selling them to a Trade Authority vendor and then buying them back without the stolen tag, making them safe to keep without risk of confiscation

• To avoid detection when carrying contraband (which triggers alarms), you can invest in ship upgrades like a shielded cargo hold or scan jammer, and skills like Deception to reduce the chance of being caught

In summary, to sell stolen items in Starfield, seek out Trade Authority vendors at places like Neon City, The Den in the Wolf system, or Crimson Fleet vendors on The Eye. Normal merchants will not buy stolen goods, so these specialized vendors are your only option