Add SECURITY-1446 advisory link to secrets documentation

Author: somiljain2006

docs/features/secrets.adoc

@@ -152,7 +152,7 @@ ${trim:${readFile:/secret/passphrase.txt}}
 
 === Security and compatibility considerations
 
-// TODO(oleg_nenashev): Add a link to the advisory once ready
+For more details, see the link:https://www.jenkins.io/security/advisory/2019-07-31/#SECURITY-1446[Jenkins Security Advisory for SECURITY-1446 (CVE-2019-10362)].
 
 Jenkins configurations might include property definitions,
 e.g. for Token Macro resolution in Mail Ext Plugin.