diff --git a/docs/visualize/tsvb.asciidoc b/docs/visualize/tsvb.asciidoc
index 36709c2cc6437..9a1e81670b654 100644
--- a/docs/visualize/tsvb.asciidoc
+++ b/docs/visualize/tsvb.asciidoc
@@ -122,3 +122,17 @@ Edit the source for the Markdown visualization.
 . To insert the mustache template variable into the editor, click the variable name.
 +
 The http://mustache.github.io/mustache.5.html[mustache syntax] uses the Handlebar.js processor, which is an extended version of the Mustache template language.
+
+[float]
+[[tsvb-style-markdown]]
+==== Style Markdown text
+
+Style your Markdown visualization using http://lesscss.org/features/[less syntax].
+
+. Select *Markdown*.
+
+. Select *Panel options*.
+
+. Enter styling rules in *Custom CSS* section
++
+Less in TSVB does not support custom plugins or inline JavaScript.
diff --git a/package.json b/package.json
index 7b3d623b150f0..1a880f8fb221c 100644
--- a/package.json
+++ b/package.json
@@ -204,7 +204,7 @@
     "leaflet-responsive-popup": "0.6.4",
     "leaflet-vega": "^0.8.6",
     "leaflet.heat": "0.2.0",
-    "less": "^2.7.3",
+    "less": "npm:@elastic/less@2.7.3-kibana",
     "less-loader": "5.0.0",
     "lodash": "npm:@elastic/lodash@3.10.1-kibana4",
     "lodash.clonedeep": "^4.5.0",
diff --git a/src/legacy/core_plugins/vis_type_timeseries/public/components/panel_config/markdown.js b/src/legacy/core_plugins/vis_type_timeseries/public/components/panel_config/markdown.js
index ed17fceeda540..4aa8856836fc6 100644
--- a/src/legacy/core_plugins/vis_type_timeseries/public/components/panel_config/markdown.js
+++ b/src/legacy/core_plugins/vis_type_timeseries/public/components/panel_config/markdown.js
@@ -64,7 +64,7 @@ class MarkdownPanelConfigUi extends Component {
     const lessSrc = `#markdown-${model.id} {
   ${value}
 }`;
-    lessC.render(lessSrc, { compress: true }, (e, output) => {
+    lessC.render(lessSrc, { compress: true, javascriptEnabled: false }, (e, output) => {
       const parts = { markdown_less: value };
       if (output) {
         parts.markdown_css = output.css;
diff --git a/yarn.lock b/yarn.lock
index ec10623aee473..bcb4085b16f03 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -20176,10 +20176,10 @@ less-loader@5.0.0:
     loader-utils "^1.1.0"
     pify "^4.0.1"
 
-less@^2.7.3:
-  version "2.7.3"
-  resolved "https://registry.yarnpkg.com/less/-/less-2.7.3.tgz#cc1260f51c900a9ec0d91fb6998139e02507b63b"
-  integrity sha512-KPdIJKWcEAb02TuJtaLrhue0krtRLoRoo7x6BNJIBelO00t/CCdJQUnHW5V34OnHMWzIktSalJxRO+FvytQlCQ==
+"less@npm:@elastic/less@2.7.3-kibana":
+  version "2.7.3-kibana"
+  resolved "https://registry.yarnpkg.com/@elastic/less/-/less-2.7.3-kibana.tgz#3de5e0b06bb095b1cc1149043d67f8dc36272d23"
+  integrity sha512-Okm31ZKE28/m3bH0h0mNpQH0zqVWNFqRKDlsBd1AYHGdM1yBq4mzeO6IRUykB81XDGlqL0m4ThSA7mc3hy+LVg==
   optionalDependencies:
     errno "^0.1.1"
     graceful-fs "^4.1.2"