Vulnerability in the Application Express component of Oracle Database Server. Supported versions that are affected are 5.1 and 18.2. Easily exploitable vulnerability allows low privileged attacker having Valid Account privilege with network access via HTTP to compromise Application Express. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Application Express, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Application Express accessible data as well as unauthorized read access to a subset of Application Express accessible data. CVSS 3.0 Base Score 5.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N).