Mega'/**/and/**/dbms_pipe.receive_message('a',2)='a Apr 2026

If the page takes ~2 seconds longer than usual to load, they know the DBMS_PIPE command was successfully executed.

: A logical operator used to append a new condition to the original query. MEGA'/**/and/**/DBMS_PIPE.RECEIVE_MESSAGE('a',2)='a

: Ensure the database user account used by the application does not have permission to execute high-risk packages like DBMS_PIPE unless absolutely necessary. If the page takes ~2 seconds longer than

To protect against this type of vulnerability, you should implement the following: To protect against this type of vulnerability, you

This confirmation allows them to move on to more destructive queries, such as extracting usernames, passwords, or entire table structures, one character at a time based on these time delays. Mitigation and Defense

: These are SQL comment tags used in place of spaces. Attackers use this technique to bypass Web Application Firewalls (WAFs) or filters that might block standard whitespace.

The string MEGA'/**/and/**/DBMS_PIPE.RECEIVE_MESSAGE('a',2)='a is a classic example of a payload specifically targeting Oracle databases. Analysis of the Payload