vatsrahul1001 commented on code in PR #72946:
URL: https://github.com/apache/airflow/pull/72946#discussion_r3990099999
##########
RELEASE_NOTES.rst:
##########
@@ -24,6 +24,210 @@
.. towncrier release notes start
+Airflow 3.3.2 (2026-09-17)
+--------------------------
+
+Significant Changes
+^^^^^^^^^^^^^^^^^^^
+
+- Backfill endpoints no longer disclose which backfill ids exist across Dags
+
+ The four routes that name a backfill in their path -- ``GET
/backfills/{backfill_id}``
+ and the ``pause``, ``unpause`` and ``cancel`` routes -- resolved the Dag
they authorize
+ against from the ``dag_id`` supplied on the request whenever the path's id
matched no row.
+ An unknown id and a backfill on a Dag the caller cannot see therefore
answered differently,
+ which enumerates backfill ids across Dags.
+
+ The backfill named in the path is now the only thing those routes authorize
against.
+
+ **Behaviour changes:**
+
+ - A backfill whose Dag the caller may not read returns ``404`` with detail
+ ``Backfill not found``, the same answer an unknown id gets, where it
previously returned
+ ``403``. A caller who may read the Dag still gets ``403`` for a write they
are not allowed.
Review Comment:
Updated
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