Chris Brown Sued -- Your Lack of Security Got Me Shot!

One of Chris Brown's fans is blaming the singer for the gunshot wound he suffered during a Bay Area concert back in January.

Paul Briley filed a lawsuit against Brown for the shooting that went down at San Jose's Capricorn Bash. In the suit, Briley says Brown failed to provide enough security.

TMZ broke the story ... 5 people were injured when the shots rang out around 1:30 AM.

Briley says he sustained permanent injuries. He points out that Brown had multiple violent incidents at concerts before the San Jose show ... and therefore, should have had more security.