Added Misconfigured Concrete5 (#3563)

misconfiguration/misconfigured-concrete5.yaml

@@ -0,0 +1,20 @@
+id: misconfigured-concrete5
+
+info:
+  name: Misconfigured Concrete5
+  author: pdteam
+  severity: low
+  tags: misconfig,concrete,cms
+
+requests:
+  - method: GET
+    path:
+      - "{{BaseURL}}"
+
+    redirects: true
+    max-redirects: 2
+    matchers:
+      - type: word
+        part: body
+        words:
+          - 'concrete5 has encountered an issue'