diff --git a/lucene/CHANGES.txt b/lucene/CHANGES.txt
index fb9e7665a9e..53c5c03ade9 100644
--- a/lucene/CHANGES.txt
+++ b/lucene/CHANGES.txt
@@ -30,6 +30,10 @@ Bug Fixes
 
 * GITHUB#14075: Remove duplicate and add missing entry on brazilian portuguese stopwords list. (Arthur Caccavo)
 
+Changes in Runtime Behavior
+---------------------
+* GITHUB#14187: The query cache is now disabled by default. (Adrien Grand)
+
 Other
 ---------------------
 (No changes)
diff --git a/lucene/core/src/java/org/apache/lucene/search/IndexSearcher.java b/lucene/core/src/java/org/apache/lucene/search/IndexSearcher.java
index e3074a96d88..18fc5266f99 100644
--- a/lucene/core/src/java/org/apache/lucene/search/IndexSearcher.java
+++ b/lucene/core/src/java/org/apache/lucene/search/IndexSearcher.java
@@ -77,7 +77,8 @@
 public class IndexSearcher {
 
   static int maxClauseCount = 1024;
-  private static QueryCache DEFAULT_QUERY_CACHE;
+  // Caching is disabled by default.
+  private static QueryCache DEFAULT_QUERY_CACHE = null;
   private static QueryCachingPolicy DEFAULT_CACHING_POLICY = new UsageTrackingQueryCachingPolicy();
   private QueryTimeout queryTimeout = null;
   // partialResult may be set on one of the threads of the executor. It may be correct to not make
@@ -86,13 +87,6 @@ public class IndexSearcher {
   // shouldn't hurt either.
   private volatile boolean partialResult = false;
 
-  static {
-    final int maxCachedQueries = 1000;
-    // min of 32MB or 5% of the heap size
-    final long maxRamBytesUsed = Math.min(1L << 25, Runtime.getRuntime().maxMemory() / 20);
-    DEFAULT_QUERY_CACHE = new LRUQueryCache(maxCachedQueries, maxRamBytesUsed);
-  }
-
   /**
    * By default, we count hits accurately up to 1000. This makes sure that we don't spend most time
    * on computing hit counts