diff --git a/common.gypi b/common.gypi
index 102f0907745507..a6556a4cb727ac 100644
--- a/common.gypi
+++ b/common.gypi
@@ -34,7 +34,7 @@
 
     # Reset this number to 0 on major V8 upgrades.
     # Increment by one for each non-official patch applied to deps/v8.
-    'v8_embedder_string': '-node.45',
+    'v8_embedder_string': '-node.46',
 
     ##### V8 defaults for Node.js #####
 
diff --git a/deps/v8/src/common/message-template.h b/deps/v8/src/common/message-template.h
index e3307a525c81fa..7b9819a0bab8e9 100644
--- a/deps/v8/src/common/message-template.h
+++ b/deps/v8/src/common/message-template.h
@@ -554,7 +554,9 @@ namespace internal {
   T(DataCloneError, "% could not be cloned.")                                  \
   T(DataCloneErrorOutOfMemory, "Data cannot be cloned, out of memory.")        \
   T(DataCloneErrorDetachedArrayBuffer,                                         \
-    "An ArrayBuffer is neutered and could not be cloned.")                     \
+    "An ArrayBuffer is detached and could not be cloned.")                     \
+  T(DataCloneErrorNonDetachableArrayBuffer,                                    \
+    "ArrayBuffer is not detachable and could not be cloned.")                  \
   T(DataCloneErrorSharedArrayBufferTransferred,                                \
     "A SharedArrayBuffer could not be cloned. SharedArrayBuffer must not be "  \
     "transferred.")                                                            \
diff --git a/deps/v8/src/objects/value-serializer.cc b/deps/v8/src/objects/value-serializer.cc
index 3b3506fbb9178a..898741dfbe9d35 100644
--- a/deps/v8/src/objects/value-serializer.cc
+++ b/deps/v8/src/objects/value-serializer.cc
@@ -877,6 +877,11 @@ Maybe<bool> ValueSerializer::WriteJSArrayBuffer(
     WriteVarint(index.FromJust());
     return ThrowIfOutOfMemory();
   }
+  if (!array_buffer->is_detachable()) {
+    ThrowDataCloneError(
+        MessageTemplate::kDataCloneErrorNonDetachableArrayBuffer);
+    return Nothing<bool>();
+  }
 
   uint32_t* transfer_entry = array_buffer_transfer_map_.Find(array_buffer);
   if (transfer_entry) {
diff --git a/deps/v8/test/mjsunit/wasm/worker-memory.js b/deps/v8/test/mjsunit/wasm/worker-memory.js
index c5b99ede7e2836..bf5430f7139815 100644
--- a/deps/v8/test/mjsunit/wasm/worker-memory.js
+++ b/deps/v8/test/mjsunit/wasm/worker-memory.js
@@ -11,6 +11,13 @@
   assertThrows(() => worker.postMessage(memory), Error);
 })();
 
+(function TestPostMessageUnsharedMemoryBuffer() {
+  let worker = new Worker('', {type: 'string'});
+  let memory = new WebAssembly.Memory({initial: 1, maximum: 2});
+
+  assertThrows(() => worker.postMessage(memory.buffer), Error);
+})();
+
 // Can't use assert in a worker.
 let workerHelpers =
   `function assertTrue(value, msg) {