diff --git a/fpdfsdk/cpdfsdk_interactiveform.cpp b/fpdfsdk/cpdfsdk_interactiveform.cpp
index 098a917..c724af5 100644
--- a/fpdfsdk/cpdfsdk_interactiveform.cpp
+++ b/fpdfsdk/cpdfsdk_interactiveform.cpp
@@ -70,7 +70,8 @@
 }
 #endif  // PDF_ENABLE_XFA
 
-bool FDFToURLEncodedData(std::vector<uint8_t>* pBuffer) {
+bool FDFToURLEncodedData(
+    std::vector<uint8_t, FxAllocAllocator<uint8_t>>* pBuffer) {
   std::unique_ptr<CFDF_Document> pFDF = CFDF_Document::ParseMemory(*pBuffer);
   if (!pFDF)
     return true;
@@ -445,7 +446,8 @@
   if (textBuf.IsEmpty())
     return false;
 
-  std::vector<uint8_t> buffer(textBuf.begin(), textBuf.end());
+  std::vector<uint8_t, FxAllocAllocator<uint8_t>> buffer(textBuf.begin(),
+                                                         textBuf.end());
   if (bUrlEncoded && !FDFToURLEncodedData(&buffer))
     return false;
 
@@ -476,7 +478,8 @@
   if (fdfBuffer.IsEmpty())
     return false;
 
-  std::vector<uint8_t> buffer(fdfBuffer.begin(), fdfBuffer.end());
+  std::vector<uint8_t, FxAllocAllocator<uint8_t>> buffer(fdfBuffer.begin(),
+                                                         fdfBuffer.end());
   if (bUrlEncoded && !FDFToURLEncodedData(&buffer))
     return false;
 
diff --git a/fpdfsdk/fpdfxfa/cpdfxfa_context.cpp b/fpdfsdk/fpdfxfa/cpdfxfa_context.cpp
index 7cb4a2c..a530182 100644
--- a/fpdfsdk/fpdfxfa/cpdfxfa_context.cpp
+++ b/fpdfsdk/fpdfxfa/cpdfxfa_context.cpp
@@ -13,6 +13,7 @@
 #include "core/fpdfapi/parser/cpdf_dictionary.h"
 #include "core/fpdfapi/parser/cpdf_document.h"
 #include "core/fpdfapi/parser/cpdf_seekablemultistream.h"
+#include "core/fxcrt/fx_memory_wrappers.h"
 #include "fpdfsdk/cpdfsdk_formfillenvironment.h"
 #include "fpdfsdk/cpdfsdk_pageview.h"
 #include "fpdfsdk/fpdfxfa/cpdfxfa_page.h"
@@ -313,7 +314,7 @@
     return WideString();
 
   int nLength = 2048;
-  std::vector<uint8_t> pBuff(nLength);
+  std::vector<uint8_t, FxAllocAllocator<uint8_t>> pBuff(nLength);
   nLength = m_pFormFillEnv->JS_appResponse(wsQuestion, wsTitle, wsDefaultAnswer,
                                            WideString(), bMark, pBuff.data(),
                                            nLength);