diff --git a/pkgs/by-name/ka/kanboard/package.nix b/pkgs/by-name/ka/kanboard/package.nix
index 2984ebb03d8a..b5b33964dc96 100644
--- a/pkgs/by-name/ka/kanboard/package.nix
+++ b/pkgs/by-name/ka/kanboard/package.nix
@@ -2,6 +2,7 @@
   lib,
   stdenvNoCC,
   fetchFromGitHub,
+  fetchpatch,
   nixosTests,
   nix-update-script,
   php,
@@ -18,6 +19,16 @@ stdenvNoCC.mkDerivation (finalAttrs: {
     hash = "sha256-iI9Dyno1s9P9t7IxfDs5gQUl9yFyu2taXvKY0WnF2Q0=";
   };
 
+  # CVE-2026-56774 / NIXPKGS-2026-2001: scope remember-me session removal to
+  # the owning user so a session row can only be deleted by its owner.
+  # Remove this patch once upgraded past 1.2.52.
+  patches = [
+    (fetchpatch {
+      url = "https://github.com/kanboard/kanboard/commit/928c68aa2b7c00092dd71084d329b912e229f3d1.patch";
+      hash = "sha256-K616dTwAsLJAJMqY+DJjebfi6MV5wSICbd1iy6VynlM=";
+    })
+  ];
+
   dontBuild = true;
 
   installPhase = ''