Lee-W opened a new pull request, #74444:
URL: https://github.com/apache/airflow/pull/74444
## Why
`SQLToolset` rejects write statements by scanning the parsed statement, but
without `allowed_tables` it does not examine function calls inside a `SELECT`.
The docs missed it. A `SELECT` can therefore still call side-effecting
functions such as `nextval`, `pg_terminate_backend` or `dblink_exec`. These
pass validation and run with the connection's privileges.
## What
- `providers/common/ai/docs/toolsets/sql.rst`: add a paragraph that says the
check inspects statement types, not what a function does. It also says that
without `allowed_tables` a function call inside a `SELECT` is not examined.
Setting `allowed_tables` turns on the function check: every function sqlglot
cannot type is rejected unless it is listed in `allowed_functions`. Either way,
it recommends a least-privilege role, and a read-only transaction or session
where the database supports one.
- `providers/common/ai/docs/agent_security.rst`: in the SQLToolset read-only
row of the layers table, add the same limitation and the same recommendation.
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