{keyword}' And 6957=(select Upper(xmltype(chr(60)||chr(58)||chr(113)||chr(98)||chr(113)||chr(118)||chr(113)||(select (case When (6957=6957) Then 1 Else 0 End) From Dual)||chr(113)||chr(113)||chr(98)||chr(113)||chr(113)||chr(62))) From Dual) And 'plsa'='pls -

When Oracle tries to parse the resulting string (e.g., <:qbqvq1qqbqq> ), it realizes it is not a valid XML format. It then returns an error message like: LPX-00110: XML parsing failed... at '<:qbqvq1qqbqq>' .

The attacker sees this error in the HTTP response. Because the error contains the 1 (the result of the subquery), the attacker knows the injection worked. : When Oracle tries to parse the resulting string (e

To prevent this, you should concatenate user input directly into SQL strings. Instead: The attacker sees this error in the HTTP response

This string is a classic example of an payload, specifically targeting Oracle databases. Technical Breakdown Instead: This string is a classic example of

The payload attempts to force the database to trigger an error message that contains specific data, which confirms the vulnerability and the database type. :

In Oracle, XMLType is used to parse XML data. If the XML is malformed, the database throws an error. :

: If successful, an attacker can extract sensitive data (usernames, passwords, database version) one piece at a time by reflecting that data inside the error messages.