diff --git a/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/health/CompositeHealth.java b/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/health/CompositeHealth.java
index 63506a21cbff..6f1a8b7c247c 100644
--- a/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/health/CompositeHealth.java
+++ b/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/health/CompositeHealth.java
@@ -66,7 +66,7 @@ public Map<String, HealthComponent> getComponents() {
 
 	@JsonInclude(Include.NON_EMPTY)
 	@JsonProperty
-	Map<String, HealthComponent> getDetails() {
+	public Map<String, HealthComponent> getDetails() {
 		return this.details;
 	}
 
diff --git a/spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/health/CompositeHealthTests.java b/spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/health/CompositeHealthTests.java
index 55baed054ce9..236d123d8a9d 100644
--- a/spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/health/CompositeHealthTests.java
+++ b/spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/health/CompositeHealthTests.java
@@ -20,6 +20,7 @@
 import java.util.LinkedHashMap;
 import java.util.Map;
 
+import com.fasterxml.jackson.databind.MapperFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import org.junit.jupiter.api.Test;
 
@@ -80,4 +81,17 @@ void serializeV2WithJacksonReturnsValidJson() throws Exception {
 				+ "\"db2\":{\"status\":\"DOWN\",\"details\":{\"a\":\"b\"}}}}");
 	}
 
+	@Test // gh-26797
+	void serializeV2WithJacksonAndDisabledCanOverrideAccessModifiersReturnsValidJson() throws Exception {
+		Map<String, HealthComponent> components = new LinkedHashMap<>();
+		components.put("db1", Health.up().build());
+		components.put("db2", Health.down().withDetail("a", "b").build());
+		CompositeHealth health = new CompositeHealth(ApiVersion.V2, Status.UP, components);
+		ObjectMapper mapper = new ObjectMapper();
+		mapper.disable(MapperFeature.CAN_OVERRIDE_ACCESS_MODIFIERS);
+		String json = mapper.writeValueAsString(health);
+		assertThat(json).isEqualTo("{\"status\":\"UP\",\"details\":{\"db1\":{\"status\":\"UP\"},"
+				+ "\"db2\":{\"status\":\"DOWN\",\"details\":{\"a\":\"b\"}}}}");
+	}
+
 }