diff --git a/changelogs/fragments/49084-influxdb_user-default-password-fix.yaml b/changelogs/fragments/49084-influxdb_user-default-password-fix.yaml
new file mode 100644
index 00000000000..81188af66c0
--- /dev/null
+++ b/changelogs/fragments/49084-influxdb_user-default-password-fix.yaml
@@ -0,0 +1,3 @@
+---
+bugfixes:
+  - influxdb_user - An unspecified password now sets the password to blank, except on existing users. This previously caused an unhandled exception.
diff --git a/lib/ansible/modules/database/influxdb/influxdb_user.py b/lib/ansible/modules/database/influxdb/influxdb_user.py
index 52a2057006a..3ec22ef6ab7 100644
--- a/lib/ansible/modules/database/influxdb/influxdb_user.py
+++ b/lib/ansible/modules/database/influxdb/influxdb_user.py
@@ -166,11 +166,12 @@ def main():
 
     if state == 'present':
         if user:
-            if check_user_password(module, client, user_name, user_password):
+            if user_password is None or check_user_password(module, client, user_name, user_password):
                 module.exit_json(changed=False)
             else:
                 set_user_password(module, client, user_name, user_password)
         else:
+            user_password = user_password or ''
             create_user(module, client, user_name, user_password, admin)
 
     if state == 'absent':