ephraimbuddy commented on code in PR #47577:
URL: https://github.com/apache/airflow/pull/47577#discussion_r1987644180
##########
airflow/api_fastapi/core_api/security.py:
##########
@@ -197,3 +199,26 @@ def _requires_access(
) -> None:
if not is_authorized_callback():
raise HTTPException(status.HTTP_403_FORBIDDEN, "Forbidden")
+
+
+def is_safe_url(target_url: str) -> bool:
+ """
+ Check that the URL is safe.
+
+ Needs to belong to the same domain as base_url, use HTTP or HTTPS (no
JavaScript/data schemes),
+ is a valid normalized path.
+ """
+ base_url = conf.get("api", "base_url")
+ parsed_base = urlparse(base_url)
Review Comment:
Let's check that target_url is not an empty string and also `urlparse` the
target_url the same way we parsed the base_url before we do the join. What if
the target is an absolute url? We could also check for bad protocols on
target_url.
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