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add security note about accessing urls #1600

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add security note about accessing urls #1600

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160b151
add security note about accessing urls
gregsdennis Apr 26, 2025
6ef050f
update security note on URL access to actually address security issues
gregsdennis May 3, 2025
7237028
Update specs/jsonschema-core.md
gregsdennis May 7, 2025
522b4ef
remove mention of specific attacks
gregsdennis May 16, 2025
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6 changes: 6 additions & 0 deletions specs/jsonschema-core.md
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Expand Up @@ -1990,6 +1990,12 @@ A malicious schema author could place executable code or other dangerous
material within a `$comment`. Implementations MUST NOT parse or otherwise take
action based on `$comment` contents.

When encountering an IRI that also represents a valid file system or network
location, implementations are discouraged from automatically making an operation to
access that location. Schema authors should take care when configuring
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The audience of the spec isn't schema authors and we shouldn't be speaking directly to them. We've moved away from that in other places and I think we should stick to that as a policy.

We can say the same thing this is saying, but from the perspective of the implementation.

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I think this is probably the one place where it should be okay to address the schema author. They should know the risks of using an implementation.

implementations to operate over a file system or network as this could expose
the host system.

## IANA Considerations

### `application/schema+json`
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