Deserialization of Untrusted Data in FasterXML jackson-databind
FasterXML jackson-databind 2.x before 2.9.9.1 might allow attackers to have a variety of impacts by leveraging failure to block the logback-core class from polymorphic deserialization. Depending on the classpath content, remote code execution may be possible.
Information Disclosure
A Polymorphic Typing issue was discovered in FasterXML jackson-databind. When Default Typing is enabled (either globally or for a specific property) for an externally exposed JSON endpoint and the service has JDOM in the classpath, an attacker can send a specifically crafted JSON message that allows them to read arbitrary local files on the server.