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ROB: Fail with explicit exception when image mode is an empty array #3500

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Merged
merged 1 commit into from
Oct 22, 2025
Merged

ROB: Fail with explicit exception when image mode is an empty array #3500

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2 changes: 2 additions & 0 deletions pypdf/_xobj_image_helpers.py
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Original file line number Diff line number Diff line change
Expand Up @@ -64,6 +64,8 @@ def _get_imagemode(
raise PdfReadError(
"Cannot interpret color space", color_space
) # pragma: no cover
elif not color_space:
return "", False
elif color_space[0].startswith("/Cal"): # /CalRGB and /CalGray
color_space_str = "/Device" + color_space[0][4:]
elif color_space[0] == "/ICCBased":
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11 changes: 11 additions & 0 deletions tests/test_xobject_image_helpers.py
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Expand Up @@ -160,3 +160,14 @@ def test_get_mode_and_invert_color():
page = reader.pages[12]
for _name, image in page.images.items(): # noqa: PERF102
image.image.load()


@pytest.mark.enable_socket
def test_get_imagemode__empty_array():
url = "https://github.com/user-attachments/files/23050451/poc.pdf"
name = "issue3499.pdf"
reader = PdfReader(BytesIO(get_data_from_url(url, name=name)))
page = reader.pages[0]

with pytest.raises(expected_exception=PdfReadError, match=r"^ColorSpace field not found in .+"):
page.images[0].image.load()
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