The mysql_change_db function in MySQL 5.0.x before 5.0.40 and 5.1.x before 5.1.18 does not restore THD::db_access privileges when returning from SQL SECURITY INVOKER stored routines, which allows remote authenticated users to gain privileges.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.008
EPSS Ranking 72.6%