diff --git a/api/src/services/recognition_exchange.py b/api/src/services/recognition_exchange.py
index a26e4c0..8ca7f2e 100644
--- a/api/src/services/recognition_exchange.py
+++ b/api/src/services/recognition_exchange.py
@@ -560,7 +560,8 @@ def _parse_message(msg: InboundMessage) -> RecognitionResultMessage | None:
         return RecognitionResultMessage.model_validate(data)
     except ValidationError as exc:
         raw_job_id = data.get("job_id")
-        job_id = raw_job_id[:LOG_ID_MAX_LENGTH] if isinstance(raw_job_id, str) else None
+        # job_id невалидного сообщения — данные отправителя: repr экранирует переводы строк и управляющие символы
+        job_id = repr(raw_job_id[:LOG_ID_MAX_LENGTH]) if isinstance(raw_job_id, str) else None
         errors = "; ".join(
             f"{'.'.join(str(part) for part in error['loc']) or '<root>'}: {error['msg']}"
             for error in exc.errors(include_url=False, include_input=False, include_context=False)
diff --git a/api/tests/test_recognition_inbox.py b/api/tests/test_recognition_inbox.py
index 093e1df..e3d69c3 100644
--- a/api/tests/test_recognition_inbox.py
+++ b/api/tests/test_recognition_inbox.py
@@ -238,6 +238,18 @@ async def test_invalid_message_log_carries_job_id_when_readable(logs: list[Any])
     assert str(_JOB) in record["message"]
 
 
+async def test_invalid_message_job_id_is_escaped_in_log(logs: list[Any]):
+    """job_id невалидного сообщения с переводом строки попадает в лог через repr: подделать строку лога нельзя (M-7)."""
+    forged = "not-a-uuid\n2026-10-04 | INFO | подделанная запись\r\x1b[31m"
+    body = {**envelope(_JOB, _FILE, "done"), "job_id": forged}
+    msg = fake_msg(body, "result:x:1", validate=False)
+    await handle_message(msg, session_factory=_UntouchableFactory())  # type: ignore[arg-type]
+    (record,) = _logged(logs, "отклонено", "WARNING")
+    message = record["message"]
+    assert "\n" not in message and "\r" not in message and "\x1b" not in message
+    assert repr(forged) in message
+
+
 async def test_database_error_is_logged_and_not_raised(logs: list[Any]):
     """Ошибка БД (сервер недоступен) — `logger.exception`, без повторов, наружу не выходит."""
     engine = create_async_engine("postgresql+asyncpg://nobody:nothing@127.0.0.1:1/none")