diff --git a/src/warden-server/etc/warden-server.conf b/src/warden-server/etc/warden-server.conf
index 2180acab1d7a28491017447329149d1f94a13e78..6c3588ac128ab98aaac4ae83494f9287c7c67d65 100644
--- a/src/warden-server/etc/warden-server.conf
+++ b/src/warden-server/etc/warden-server.conf
@@ -52,6 +52,6 @@ $MAX_EVENTS_LIMIT = 1000000;
 # VALID_STRINGS - validation hash containing allowed event attributes
 #-------------------------------------------------------------------------------
 %VALID_STRINGS = (
-  "type" => ["portscan", "bruteforce", "probe", "spam", "phishing", "botnet_c_c", "dos", "malware", "copyright", "webattack", "test", "other", "_any_"],
+  "type" => ["portscan", "bruteforce", "probe", "spam", "phishing", "botnet_c_c", "dos", "malware", "copyright", "webattack", "vulnerability", "test", "other", "_any_"],
   "source_type" => ["IP", "URL", "Reply-To:"]
 );