add SECURITY.md

mizdra · web-flow · commit 15b9e5e9989e · 2025-10-21T21:59:04.000+09:00
diff --git a/SECURITY.md b/SECURITY.md
@@ -2,7 +2,7 @@
 
 ## Supported Versions
 
-Security updates are only provided for the latest version.
+Security updates are provided only for the latest version and v12. However, security updates for v12 are provided on a best-effort basis. They may not necessarily contain the same content as the latest version.
 
 ## Reporting a Vulnerability
 
