diff --git a/core/fxcrt/cfx_seekablestreamproxy.cpp b/core/fxcrt/cfx_seekablestreamproxy.cpp
index 7bba0d8..3b65c14 100644
--- a/core/fxcrt/cfx_seekablestreamproxy.cpp
+++ b/core/fxcrt/cfx_seekablestreamproxy.cpp
@@ -19,6 +19,7 @@
 #include "build/build_config.h"
 #include "core/fxcrt/fx_codepage.h"
 #include "core/fxcrt/fx_extension.h"
+#include "core/fxcrt/fx_memory_wrappers.h"
 #include "third_party/base/stl_util.h"
 
 namespace {
@@ -217,7 +218,7 @@
     size_t iBytes = std::min(size, static_cast<size_t>(GetSize() - pos));
 
     if (iBytes > 0) {
-      std::vector<uint8_t> buf(iBytes);
+      std::vector<uint8_t, FxAllocAllocator<uint8_t>> buf(iBytes);
 
       size_t iLen = ReadData(buf.data(), iBytes);
       if (m_wCodePage != FX_CODEPAGE_UTF8)
diff --git a/core/fxcrt/cfx_utf8encoder.h b/core/fxcrt/cfx_utf8encoder.h
index d44a829..20afe4c 100644
--- a/core/fxcrt/cfx_utf8encoder.h
+++ b/core/fxcrt/cfx_utf8encoder.h
@@ -9,6 +9,7 @@
 
 #include <vector>
 
+#include "core/fxcrt/fx_memory_wrappers.h"
 #include "core/fxcrt/fx_string.h"
 
 class CFX_UTF8Encoder {
@@ -25,7 +26,7 @@
   }
 
  private:
-  std::vector<uint8_t> m_Buffer;
+  std::vector<uint8_t, FxAllocAllocator<uint8_t>> m_Buffer;
 };
 
 #endif  // CORE_FXCRT_CFX_UTF8ENCODER_H_
diff --git a/core/fxcrt/xml/cfx_xmlparser.cpp b/core/fxcrt/xml/cfx_xmlparser.cpp
index f6056e7..2dcfd9b 100644
--- a/core/fxcrt/xml/cfx_xmlparser.cpp
+++ b/core/fxcrt/xml/cfx_xmlparser.cpp
@@ -96,7 +96,7 @@
       xml_plane_size_ <= 0)
     return false;
 
-  std::vector<wchar_t> buffer;
+  std::vector<wchar_t, FxAllocAllocator<wchar_t>> buffer;
   buffer.resize(pdfium::base::ValueOrDieForType<size_t>(alloc_size_safe));
 
   std::stack<wchar_t> character_to_skip_too_stack;
diff --git a/core/fxcrt/xml/cfx_xmlparser.h b/core/fxcrt/xml/cfx_xmlparser.h
index 87ad9d6..ef171c6 100644
--- a/core/fxcrt/xml/cfx_xmlparser.h
+++ b/core/fxcrt/xml/cfx_xmlparser.h
@@ -10,6 +10,7 @@
 #include <memory>
 #include <vector>
 
+#include "core/fxcrt/fx_memory_wrappers.h"
 #include "core/fxcrt/fx_string.h"
 #include "core/fxcrt/retain_ptr.h"
 
@@ -55,7 +56,7 @@
 
   CFX_XMLNode* current_node_ = nullptr;
   RetainPtr<CFX_SeekableStreamProxy> stream_;
-  std::vector<wchar_t> current_text_;
+  std::vector<wchar_t, FxAllocAllocator<wchar_t>> current_text_;
   size_t xml_plane_size_ = 1024;
   int32_t entity_start_ = -1;
 };