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fix uncontrolled data used in path expression from /custom_component #1926

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nicoloboschi
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while calling custom_component the check for the path to be child of the cache directory is performed after the path.exists call which could bring to security vulnerabilities

@dosubot dosubot bot added the size:XS This PR changes 0-9 lines, ignoring generated files. label May 20, 2024
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@dosubot dosubot bot added the bug Something isn't working label May 20, 2024
if not str(path).startswith(user_cache_dir("langflow", "langflow")):
return ""

if not path.exists():

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Code scanning / CodeQL

Uncontrolled data used in path expression High

This path depends on a
user-provided value
.
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@ogabrielluiz ogabrielluiz left a comment

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LGTM

@dosubot dosubot bot added the lgtm This PR has been approved by a maintainer label May 23, 2024
@ogabrielluiz ogabrielluiz merged commit 349443c into langflow-ai:dev May 23, 2024
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