diff --git a/0005-Fix-CVE-2020-13631.patch b/0005-Fix-CVE-2020-13631.patch
new file mode 100644
index 0000000..781ec6a
--- /dev/null
+++ b/0005-Fix-CVE-2020-13631.patch
@@ -0,0 +1,82 @@
+diff -Naur 1/src/alter.c 2/src/alter.c
+--- 1/src/alter.c	2020-06-02 16:02:38.294309518 -0400
++++ 2/src/alter.c	2020-06-02 16:05:27.248309518 -0400
+@@ -123,7 +123,10 @@
+   /* Check that a table or index named 'zName' does not already exist
+   ** in database iDb. If so, this is an error.
+   */
+-  if( sqlite3FindTable(db, zName, zDb) || sqlite3FindIndex(db, zName, zDb) ){
++  if( sqlite3FindTable(db, zName, zDb)
++   || sqlite3FindIndex(db, zName, zDb)
++   || sqlite3IsShadowTableOf(db, pTab, zName)
++  ){
+     sqlite3ErrorMsg(pParse, 
+         "there is already another table or index with this name: %s", zName);
+     goto exit_rename_table;
+diff -Naur 1/src/build.c 2/src/build.c
+--- 1/src/build.c	2020-06-02 16:02:38.325309518 -0400
++++ 2/src/build.c	2020-06-02 16:11:12.023309518 -0400
+@@ -2129,6 +2129,28 @@
+   recomputeColumnsNotIndexed(pPk);
+ }
+ 
++
++#ifndef SQLITE_OMIT_VIRTUALTABLE
++/*
++ * ** Return true if pTab is a virtual table and zName is a shadow table name
++ * ** for that virtual table.
++ * */
++int sqlite3IsShadowTableOf(sqlite3 *db, Table *pTab, const char *zName){
++  int nName;                    /* Length of zName */
++  Module *pMod;                 /* Module for the virtual table */
++
++  if( !IsVirtual(pTab) ) return 0;
++  nName = sqlite3Strlen30(pTab->zName);
++  if( sqlite3_strnicmp(zName, pTab->zName, nName)!=0 ) return 0;
++  if( zName[nName]!='_' ) return 0;
++  pMod = (Module*)sqlite3HashFind(&db->aModule, pTab->azModuleArg[0]);
++  if( pMod==0 ) return 0;
++  if( pMod->pModule->iVersion<3 ) return 0;
++  if( pMod->pModule->xShadowName==0 ) return 0;
++  return pMod->pModule->xShadowName(zName+nName+1);
++}
++#endif /* ifndef SQLITE_OMIT_VIRTUALTABLE */
++
+ #ifndef SQLITE_OMIT_VIRTUALTABLE
+ /*
+ ** Return true if zName is a shadow table name in the current database
+@@ -2140,7 +2162,6 @@
+ int sqlite3ShadowTableName(sqlite3 *db, const char *zName){
+   char *zTail;                  /* Pointer to the last "_" in zName */
+   Table *pTab;                  /* Table that zName is a shadow of */
+-  Module *pMod;                 /* Module for the virtual table */
+ 
+   zTail = strrchr(zName, '_');
+   if( zTail==0 ) return 0;
+@@ -2149,11 +2170,7 @@
+   *zTail = '_';
+   if( pTab==0 ) return 0;
+   if( !IsVirtual(pTab) ) return 0;
+-  pMod = (Module*)sqlite3HashFind(&db->aModule, pTab->azModuleArg[0]);
+-  if( pMod==0 ) return 0;
+-  if( pMod->pModule->iVersion<3 ) return 0;
+-  if( pMod->pModule->xShadowName==0 ) return 0;
+-  return pMod->pModule->xShadowName(zTail+1);
++  return sqlite3IsShadowTableOf(db, pTab, zName);
+ }
+ #endif /* ifndef SQLITE_OMIT_VIRTUALTABLE */
+ 
+diff -Naur 1/src/sqliteInt.h 2/src/sqliteInt.h
+--- 1/src/sqliteInt.h	2020-06-02 16:02:38.291309518 -0400
++++ 2/src/sqliteInt.h	2020-06-02 16:14:49.356309518 -0400
+@@ -4673,8 +4673,10 @@
+ int sqlite3ReadOnlyShadowTables(sqlite3 *db);
+ #ifndef SQLITE_OMIT_VIRTUALTABLE
+   int sqlite3ShadowTableName(sqlite3 *db, const char *zName);
++  int sqlite3IsShadowTableOf(sqlite3*,Table*,const char*);
+ #else
+ # define sqlite3ShadowTableName(A,B) 0
++# define sqlite3IsShadowTableOf(A,B,C) 0
+ #endif
+ int sqlite3VtabEponymousTableInit(Parse*,Module*);
+ void sqlite3VtabEponymousTableClear(sqlite3*,Module*);