diff --git a/src/main/java/org/codehaus/plexus/archiver/zip/ByteArrayOutputStream.java b/src/main/java/org/codehaus/plexus/archiver/zip/ByteArrayOutputStream.java
index 41a26f0c..7a6bc952 100644
--- a/src/main/java/org/codehaus/plexus/archiver/zip/ByteArrayOutputStream.java
+++ b/src/main/java/org/codehaus/plexus/archiver/zip/ByteArrayOutputStream.java
@@ -57,6 +57,12 @@ public class ByteArrayOutputStream extends OutputStream {
      */
     private static final byte[] EMPTY_BYTE_ARRAY = new byte[0];
 
+    /**
+     * Maximum size of a single buffer (16MB) to prevent excessive memory allocation.
+     * When buffers need to grow beyond this size, additional buffers are created instead.
+     */
+    private static final int MAX_BUFFER_SIZE = 16 * 1024 * 1024;
+
     /**
      * The list of buffers, which grows and never reduces.
      */
@@ -136,6 +142,9 @@ private void needNewBuffer(final int newcount) {
                 filledBufferSum += currentBuffer.length;
             }
 
+            // Cap the buffer size to prevent excessive memory allocation
+            newBufferSize = Math.min(newBufferSize, MAX_BUFFER_SIZE);
+
             currentBufferIndex++;
             currentBuffer = new byte[newBufferSize];
             buffers.add(currentBuffer);
diff --git a/src/main/java/org/codehaus/plexus/archiver/zip/ConcurrentJarCreator.java b/src/main/java/org/codehaus/plexus/archiver/zip/ConcurrentJarCreator.java
index e431efe7..18c6ae09 100644
--- a/src/main/java/org/codehaus/plexus/archiver/zip/ConcurrentJarCreator.java
+++ b/src/main/java/org/codehaus/plexus/archiver/zip/ConcurrentJarCreator.java
@@ -112,7 +112,7 @@ public ConcurrentJarCreator(int nThreads) throws IOException {
      */
     public ConcurrentJarCreator(boolean compressAddedZips, int nThreads) throws IOException {
         this.compressAddedZips = compressAddedZips;
-        ScatterGatherBackingStoreSupplier defaultSupplier = new DeferredSupplier(100000000 / nThreads);
+        ScatterGatherBackingStoreSupplier defaultSupplier = new DeferredSupplier(10000000 / nThreads);
         metaInfDir = createDeferred(defaultSupplier);
         manifest = createDeferred(defaultSupplier);
         directories = createDeferred(defaultSupplier);