A Polymorphic Typing issue was discovered in FasterXML jackson-databind 2.x through 2.9.9. When Default Typing is enabled (either globally or for a specific property) for an externally exposed JSON endpoint and the service has JDOM 1.x or 2.x jar in the classpath, an attacker can send a specifically crafted JSON message that allows them to read arbitrary local files on the server.
{
"github_reviewed_at": "2019-07-17T14:51:50Z",
"cwe_ids": [
"CWE-502"
],
"nvd_published_at": "2019-06-19T14:15:10Z",
"github_reviewed": true,
"severity": "MODERATE"
}