{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 <AUTHENTIC BLUEPRINT>

The CHR() functions are used to bypass simple text filters. They translate to: CHR(60) = < CHR(58) = :

: 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. The CHR() functions are used to bypass simple text filters

In Oracle, XMLType is used to parse XML data. If the XML is malformed, the database throws an error. : The CHR() functions are used to bypass simple text filters

: Strict allow-listing of expected characters for the {KEYWORD} field. The CHR() functions are used to bypass simple text filters

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

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

CHR(113)CHR(98)CHR(113)CHR(118)CHR(113) = qbqvq (a unique tag/marker)