diff --git a/docs/changelog/125002.yaml b/docs/changelog/125002.yaml
new file mode 100644
index 000000000000..6b811cc80f51
--- /dev/null
+++ b/docs/changelog/125002.yaml
@@ -0,0 +1,5 @@
+pr: 125002
+summary: Don't generate stacktrace in `TaskCancelledException`
+area: Search
+type: bug
+issues: []
diff --git a/modules/aggregations/src/internalClusterTest/java/org/elasticsearch/aggregations/bucket/SearchCancellationIT.java b/modules/aggregations/src/internalClusterTest/java/org/elasticsearch/aggregations/bucket/SearchCancellationIT.java
index 5249077bdfdb..117dac0c486b 100644
--- a/modules/aggregations/src/internalClusterTest/java/org/elasticsearch/aggregations/bucket/SearchCancellationIT.java
+++ b/modules/aggregations/src/internalClusterTest/java/org/elasticsearch/aggregations/bucket/SearchCancellationIT.java
@@ -42,6 +42,7 @@ import static org.elasticsearch.test.hamcrest.ElasticsearchAssertions.assertAcke
 import static org.elasticsearch.test.hamcrest.ElasticsearchAssertions.assertNoFailures;
 import static org.hamcrest.Matchers.containsString;
 import static org.hamcrest.Matchers.equalTo;
+import static org.hamcrest.Matchers.not;
 
 public class SearchCancellationIT extends AbstractSearchCancellationTestCase {
 
@@ -124,7 +125,9 @@ public class SearchCancellationIT extends AbstractSearchCancellationTestCase {
         logger.info("All shards failed with", ex);
         if (lowLevelCancellation) {
             // Ensure that we cancelled in TimeSeriesIndexSearcher and not in reduce phase
-            assertThat(ExceptionsHelper.stackTrace(ex), containsString("TimeSeriesIndexSearcher"));
+            assertThat(ExceptionsHelper.stackTrace(ex), not(containsString("not building sub-aggregations due to task cancellation")));
+        } else {
+            assertThat(ExceptionsHelper.stackTrace(ex), containsString("not building sub-aggregations due to task cancellation"));
         }
     }
 }
diff --git a/server/src/main/java/org/elasticsearch/tasks/TaskCancelledException.java b/server/src/main/java/org/elasticsearch/tasks/TaskCancelledException.java
index 81c7bec678b3..4a56e96aa3f3 100644
--- a/server/src/main/java/org/elasticsearch/tasks/TaskCancelledException.java
+++ b/server/src/main/java/org/elasticsearch/tasks/TaskCancelledException.java
@@ -27,6 +27,11 @@ public class TaskCancelledException extends ElasticsearchException {
         super(in);
     }
 
+    @Override
+    public Throwable fillInStackTrace() {
+        return this;  // this exception doesn't imply a bug, no need for a stack trace
+    }
+
     @Override
     public RestStatus status() {
         // Tasks are typically cancelled at the request of the client, so a 4xx status code is more accurate than the default of 500 (and