Null,null,null,null,null,null,'qbqvq'||'lhsxrmqerh'||'qqbqq',null,null-- Laxy: -3983 Union All Select

It looks like your request contains a , specifically a UNION ALL SELECT statement commonly used by security researchers or automated tools to test for vulnerabilities in databases.

This ensures the database treats the input as data, not executable code. It looks like your request contains a ,

: This combines the results of the original query with a new set of data defined by the attacker. It looks like your request contains a ,

Implement a strict allow-list for expected input formats. It looks like your request contains a ,