diff --git a/release-notes/VERSION-2.x b/release-notes/VERSION-2.x
index 9427349c25..a3624f8036 100644
--- a/release-notes/VERSION-2.x
+++ b/release-notes/VERSION-2.x
@@ -8,6 +8,8 @@ Project: jackson-databind
 
 #2986: Block two more gadget types (commons-dbcp2, CVE-2020-35490/CVE-2020-35491)
  (reported by Al1ex@knownsec)
+#2996: Block 2 more gadget types (placeholder)
+ (reported by Al1ex@knownsec)
 
 2.9.10.7 (02-Dec-2020)
 
diff --git a/src/main/java/com/fasterxml/jackson/databind/jsontype/impl/SubTypeValidator.java b/src/main/java/com/fasterxml/jackson/databind/jsontype/impl/SubTypeValidator.java
index 6e007b9c24..0b4c2778fc 100644
--- a/src/main/java/com/fasterxml/jackson/databind/jsontype/impl/SubTypeValidator.java
+++ b/src/main/java/com/fasterxml/jackson/databind/jsontype/impl/SubTypeValidator.java
@@ -211,6 +211,11 @@ public class SubTypeValidator
         s.add("org.apache.commons.dbcp2.datasources.PerUserPoolDataSource");
         s.add("org.apache.commons.dbcp2.datasources.SharedPoolDataSource");
 
+        // [databind#2996]: newrelic-agent + embedded-logback-core
+        // (derivative of #2334 and #2389)
+        s.add("com.newrelic.agent.deps.ch.qos.logback.core.db.JNDIConnectionSource");
+        s.add("com.newrelic.agent.deps.ch.qos.logback.core.db.DriverManagerConnectionSource");
+
         DEFAULT_NO_DESER_CLASS_NAMES = Collections.unmodifiableSet(s);
     }