A Polymorphic Typing issue was discovered in FasterXML jackson-databind 2.x before 2.9.9. When Default Typing is enabled (either globally or for a specific property) for an externally exposed JSON endpoint, the service has the mysql-connector-java jar (8.0.14 or earlier) in the classpath, and an attacker can host a crafted MySQL server reachable by the victim, an attacker can send a crafted JSON message that allows them to read arbitrary local files on the server. This occurs because of missing com.mysql.cj.jdbc.admin.MiniAdmin validation.

Repository: OpenNMS/kafka-event-mirrorer (https://github.com/OpenNMS/kafka-event-mirrorer)
Dependabot: https://github.com/OpenNMS/kafka-event-mirrorer/security/dependabot/1
CVE: CVE-2019-12086
CVSS: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
GHSA: GHSA-5ww9-j83m-q7qx
Severity: high
Ecosystem: maven
Package Name: com.fasterxml.jackson.core:jackson-databind
Vulnerable Version Range: >= 2.0.0, < 2.9.9
First Patched Version: 2.9.9