diff --git a/ansible/roles/horizon/defaults/main.yml b/ansible/roles/horizon/defaults/main.yml
index f8aaa408bc..1ed0373524 100644
--- a/ansible/roles/horizon/defaults/main.yml
+++ b/ansible/roles/horizon/defaults/main.yml
@@ -127,7 +127,6 @@ horizon_default_volumes:
   - "/etc/localtime:/etc/localtime:ro"
   - "{{ '/etc/timezone:/etc/timezone:ro' if ansible_facts.os_family == 'Debian' else '' }}"
   - "kolla_logs:/var/log/kolla/"
-  - "/tmp:/tmp"
 
 horizon_extra_volumes: "{{ default_extra_volumes }}"
 
diff --git a/releasenotes/notes/harden_horizon_tmp_usage-0d690e49645b99a8.yaml b/releasenotes/notes/harden_horizon_tmp_usage-0d690e49645b99a8.yaml
new file mode 100644
index 0000000000..323ccd53be
--- /dev/null
+++ b/releasenotes/notes/harden_horizon_tmp_usage-0d690e49645b99a8.yaml
@@ -0,0 +1,6 @@
+---
+fixes:
+  - |
+    Removes the default `/tmp/` mountpoint from the horizon container. This
+    change is made to harden the container and prevent potential security
+    issues. For more information, see the Bug Report: `LP#2068126 <https://bugs.launchpad.net/kolla-ansible/+bug/2068126>`__.