A SQL injection bypass (aka PL1 bypass) exists in OWASP ModSecurity Core Rule Set (owasp-modsecurity-crs) through v3.1.0-rc3 via {ab} where a is a special function name (such as "if") and b is the SQL statement to be executed.
{
"versions": [
{
"introduced": "0"
},
{
"last_affected": "3.0.2"
},
{
"introduced": "0"
},
{
"last_affected": "3.1.0-rc1"
}
]
}