Andrey Antukh dd4a163217
🐛 Remove internal error details from HTTP error responses (#11288)
* 🚑 Remove internal error details from HTTP error responses

PostgreSQL exceptions, I/O exceptions, and unhandled errors were
leaking raw database messages (table names, constraint names,
SQLSTATE codes), filesystem paths, and internal exception details
to API clients via :hint, :state, and :path response fields.

Remove these fields from server-error responses while keeping
full error context in server-side logs for operators.

Closes #11287

AI-assisted-by: mimo-v2.5-pro

* 🚑 Strip internal fields and map PG errors to safe messages

Complete the security fix for GHSA-r8wx-23q6-w3gf by addressing
the incomplete redaction found in code review.

Add strip-internal-fields helper to dissoc :hint, :state, :path,
and :context from error response data in three handlers that
previously passed raw ex-data through to clients:

- handle-error :internal
- handle-exception :default (else branch)
- handle-error :assertion (else branch)

Add pgsql-state->message to map PostgreSQL SQLSTATE codes to safe,
client-facing messages (e.g. 23505 → "A conflicting entry already
exists") instead of returning raw PG error text. Include :message
in all PSQLException response branches.

Add regression tests asserting :hint, :state, :path, :context are
absent from responses for :internal and unhandled ex-info errors.

Closes #11287

AI-assisted-by: mimo-v2.5-pro

* 🚑 Keep :hint in error protocol, fix unsafe sources

Refine the security fix based on code review feedback.

Keep :hint as part of the error protocol — it is essential for
controlled error communication. Remove it from strip-internal-fields
(which now only strips :state, :path, :context).

Fix the actual sources of unsafe :hint values:

- http/middleware.clj: replace (ex-message cause) with safe static
  strings for IllegalArgumentException, RequestTooBigException, and
  EOFException. These :validation errors return ex-data verbatim
  to clients, so raw exception messages were leaking internals.

- PSQLException handler: use :hint instead of :message for the
  SQLSTATE-mapped messages, staying consistent with the error
  protocol.

Update tests to assert :hint is present (with safe static values)
in :internal and unhandled ex-info responses, and absent only from
bare RuntimeException and IOException responses.

Closes #11287

AI-assisted-by: mimo-v2.5-pro
2026-08-21 12:43:23 +02:00
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