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Only replace a maximum of two Exif headers #10073

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Merged
radarhere merged 1 commit into from
Sep 28, 2026
+7 −2
Merged

Only replace a maximum of two Exif headers #10073

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6 changes: 6 additions & 0 deletions Tests/test_image.py
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Original file line number Diff line number Diff line change
Expand Up @@ -801,6 +801,12 @@ def test_duplicate_exif_header(self) -> None:
exif = im.getexif()
assert exif[274] == 1

with Image.open("Tests/images/exif.png") as im:
im.load()
im.info["exif"] = b"Exif\x00\x00" * 2 + im.info["exif"]
with pytest.raises(SyntaxError):
im.getexif()

def test_empty_get_ifd(self) -> None:
exif = Image.Exif()
ifd = exif.get_ifd(0x8769)
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3 changes: 1 addition & 2 deletions src/PIL/Image.py
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Expand Up @@ -4143,8 +4143,7 @@ def load(self, data: bytes) -> None:
self._data.clear()
self._hidden_data.clear()
self._ifds.clear()
while data and data.startswith(b"Exif\x00\x00"):
data = data[6:]
data = re.sub(b"^(Exif\x00\x00){1,2}", b"", data)
if not data:
self._info = None
return
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