Corrected reading EXIF metadata without prefix

Author: radarhere

Tests/test_file_webp_metadata.py

@@ -30,6 +30,15 @@ def test_read_exif_metadata():
             assert exif_data == expected_exif
 
 
+def test_read_exif_metadata_without_prefix():
+    with Image.open("Tests/images/flower2.webp") as im:
+        # Assert prefix is not present
+        assert im.info["exif"][:6] != b"Exif\x00\x00"
+
+        exif = im.getexif()
+        assert exif[305] == "Adobe Photoshop CS6 (Macintosh)"
+
+
 def test_write_exif_metadata():
     file_path = "Tests/images/flower.jpg"
     test_buffer = BytesIO()

src/PIL/Image.py

@@ -3289,7 +3289,9 @@ def load(self, data):
         if not data:
             return
 
-        self.fp = io.BytesIO(data[6:])
+        if data.startswith(b"Exif\x00\x00"):
+            data = data[6:]
+        self.fp = io.BytesIO(data)
         self.head = self.fp.read(8)
         # process dictionary
         from . import TiffImagePlugin