CodeQL library for Java
codeql/java-all 0.7.5 ( changelog , source )
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Predicate hasArgumentWithUnsafeJacksonAnnotation

Holds if call is a method call to a Jackson deserialization method such as ObjectMapper.readValue(String, Class), and the target deserialized class has a field with a JsonTypeInfo annotation that enables polymorphic typing.

Import path

import semmle.code.java.frameworks.Jackson
predicate hasArgumentWithUnsafeJacksonAnnotation ( MethodAccess call )