diff --git a/ilmbase/2.2.0/rezbuild.py b/ilmbase/2.2.0/rezbuild.py
index 6938e06..4393c14 100644
--- a/ilmbase/2.2.0/rezbuild.py
+++ b/ilmbase/2.2.0/rezbuild.py
@@ -22,7 +22,26 @@ def build(source_path, build_path, install_path, targets):
     # Unzip the source
     print("Unzipping to: %s" % build_path)
     with tarfile.TarFile.open(archive, mode='r:gz') as tar:
-        tar.extractall(build_path)
+        def is_within_directory(directory, target):
+            
+            abs_directory = os.path.abspath(directory)
+            abs_target = os.path.abspath(target)
+        
+            prefix = os.path.commonprefix([abs_directory, abs_target])
+            
+            return prefix == abs_directory
+        
+        def safe_extract(tar, path=".", members=None, *, numeric_owner=False):
+        
+            for member in tar.getmembers():
+                member_path = os.path.join(path, member.name)
+                if not is_within_directory(path, member_path):
+                    raise Exception("Attempted Path Traversal in Tar File")
+        
+            tar.extractall(path, members, numeric_owner=numeric_owner) 
+            
+        
+        safe_extract(tar, build_path)
     
     folder_name = filename.rsplit(".tar.gz")[0]
     source_root = os.path.join(build_path, folder_name)
diff --git a/openexr/2.2.0/rezbuild.py b/openexr/2.2.0/rezbuild.py
index 9c45157..c58f444 100644
--- a/openexr/2.2.0/rezbuild.py
+++ b/openexr/2.2.0/rezbuild.py
@@ -23,7 +23,26 @@ def build(source_path, build_path, install_path, targets):
     # Unzip the source
     print("Unzipping to: %s" % build_path)
     with tarfile.TarFile.open(archive, mode='r:gz') as tar:
-        tar.extractall(build_path)
+        def is_within_directory(directory, target):
+            
+            abs_directory = os.path.abspath(directory)
+            abs_target = os.path.abspath(target)
+        
+            prefix = os.path.commonprefix([abs_directory, abs_target])
+            
+            return prefix == abs_directory
+        
+        def safe_extract(tar, path=".", members=None, *, numeric_owner=False):
+        
+            for member in tar.getmembers():
+                member_path = os.path.join(path, member.name)
+                if not is_within_directory(path, member_path):
+                    raise Exception("Attempted Path Traversal in Tar File")
+        
+            tar.extractall(path, members, numeric_owner=numeric_owner) 
+            
+        
+        safe_extract(tar, build_path)
     
     folder_name = filename.rsplit(".tar.gz")[0]
     source_root = os.path.join(build_path, folder_name)
diff --git a/zlib/1.2.11/rezbuild.py b/zlib/1.2.11/rezbuild.py
index ec912e9..7f45d61 100644
--- a/zlib/1.2.11/rezbuild.py
+++ b/zlib/1.2.11/rezbuild.py
@@ -22,7 +22,26 @@ def build(source_path, build_path, install_path, targets):
     # Unzip the source
     print("Unzipping to: %s" % build_path)
     with tarfile.TarFile.open(archive, mode='r:gz') as tar:
-        tar.extractall(build_path)
+        def is_within_directory(directory, target):
+            
+            abs_directory = os.path.abspath(directory)
+            abs_target = os.path.abspath(target)
+        
+            prefix = os.path.commonprefix([abs_directory, abs_target])
+            
+            return prefix == abs_directory
+        
+        def safe_extract(tar, path=".", members=None, *, numeric_owner=False):
+        
+            for member in tar.getmembers():
+                member_path = os.path.join(path, member.name)
+                if not is_within_directory(path, member_path):
+                    raise Exception("Attempted Path Traversal in Tar File")
+        
+            tar.extractall(path, members, numeric_owner=numeric_owner) 
+            
+        
+        safe_extract(tar, build_path)
     
     folder_name = filename.rsplit(".tar.gz")[0]
     source_root = os.path.join(build_path, folder_name)