diff --git a/pkgs/applications/networking/p2p/zeronet/default.nix b/pkgs/applications/networking/p2p/zeronet/default.nix
index 19da740938c7..02b0c91e2da9 100644
--- a/pkgs/applications/networking/p2p/zeronet/default.nix
+++ b/pkgs/applications/networking/p2p/zeronet/default.nix
@@ -37,5 +37,9 @@ python3Packages.buildPythonApplication rec {
     homepage = "https://zeronet.io/";
     license = licenses.gpl2;
     maintainers = with maintainers; [ fgaz ];
+    knownVulnerabilities = [ ''
+      Unmaintained. Probable XSS/code injection vulnerability.
+      Switching to the maintained zeronet-conservancy package is recommended
+    '' ];
   };
 }