diff --git a/main.py b/main.py
index 3632ec3..d1ca76d 100644
--- a/main.py
+++ b/main.py
@@ -378,6 +378,11 @@ _CORS_EXTRA_DEV_ORIGINS = [
 
 _cors_env = config.CORS_ORIGINS_RAW
 if _cors_env == "*" or not _cors_env:
+    if config.ENV == "production":
+        logger.error(
+            "CORS_ORIGINS must be configured with specific domains in production! Wildcard '*' or empty values are forbidden."
+        )
+        sys.exit("CORS configuration error: Wildcard '*' or empty CORS_ORIGINS is forbidden in production.")
     logger.warning(
         "CORS_ORIGINS not properly configured. Using permissive settings for development only!"
     )