diff --git a/docker/prometheus/prometheus-v2-server/Dockerfile.j2 b/docker/prometheus/prometheus-v2-server/Dockerfile.j2
index 6b12f27c1d..63646649aa 100644
--- a/docker/prometheus/prometheus-v2-server/Dockerfile.j2
+++ b/docker/prometheus/prometheus-v2-server/Dockerfile.j2
@@ -6,7 +6,7 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
 {% block prometheus_v2_server_header %}{% endblock %}
 
 {% block prometheus_v2_server_repository_version %}
-ENV prometheus_version=2.23.0
+ENV prometheus_version=2.26.1
 {% endblock %}
 
 {% block prometheus_v2_server_install %}
diff --git a/releasenotes/notes/security-fix-prometheus-v2.26.1-03e1410ad8ed4410.yaml b/releasenotes/notes/security-fix-prometheus-v2.26.1-03e1410ad8ed4410.yaml
new file mode 100644
index 0000000000..d6aa95a527
--- /dev/null
+++ b/releasenotes/notes/security-fix-prometheus-v2.26.1-03e1410ad8ed4410.yaml
@@ -0,0 +1,4 @@
+---
+security:
+  - |
+    Fixes security issue in Prometheus as per `advisory <https://github.com/prometheus/prometheus/security/advisories/GHSA-vx57-7f4q-fpc7>`__.