diff --git a/backend/package-lock.json b/backend/package-lock.json
index ed2be8c8c..2b556250d 100644
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
@@ -33,7 +33,7 @@
         "dedent-js": "^1.0.1",
         "dev-null": "^0.1.1",
         "express": "5.0.1",
-        "express-session": "^1.18.0",
+        "express-session": "^1.18.1",
         "fflate": "^0.8.2",
         "grant": "^5.4.22",
         "jsonschema": "^1.4.1",
@@ -8585,11 +8585,11 @@
       }
     },
     "node_modules/express-session": {
-      "version": "1.18.0",
-      "resolved": "https://registry.npmjs.org/express-session/-/express-session-1.18.0.tgz",
-      "integrity": "sha512-m93QLWr0ju+rOwApSsyso838LQwgfs44QtOP/WBiwtAgPIo/SAh1a5c6nn2BR6mFNZehTpqKDESzP+fRHVbxwQ==",
+      "version": "1.18.1",
+      "resolved": "https://registry.npmjs.org/express-session/-/express-session-1.18.1.tgz",
+      "integrity": "sha512-a5mtTqEaZvBCL9A9aqkrtfz+3SMDhOVUnjafjo+s7A9Txkq+SVX2DLvSp1Zrv4uCXa3lMSK3viWnh9Gg07PBUA==",
       "dependencies": {
-        "cookie": "0.6.0",
+        "cookie": "0.7.2",
         "cookie-signature": "1.0.7",
         "debug": "2.6.9",
         "depd": "~2.0.0",
@@ -8603,9 +8603,9 @@
       }
     },
     "node_modules/express-session/node_modules/cookie": {
-      "version": "0.6.0",
-      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.6.0.tgz",
-      "integrity": "sha512-U71cyTamuh1CRNCfpGY6to28lxvNwPG4Guz/EVjgf3Jmzv0vlDp1atT9eS5dDjMYHucpHbWns6Lwf3BKz6svdw==",
+      "version": "0.7.2",
+      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.7.2.tgz",
+      "integrity": "sha512-yki5XnKuf750l50uGTllt6kKILY4nQ1eNIQatoXEByZ5dWgnKqbnqmTrBE5B4N7lrMJKQ2ytWMiTO2o0v6Ew/w==",
       "engines": {
         "node": ">= 0.6"
       }
diff --git a/backend/package.json b/backend/package.json
index b4bcf5e84..4d07859c3 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -44,7 +44,7 @@
     "dedent-js": "^1.0.1",
     "dev-null": "^0.1.1",
     "express": "5.0.1",
-    "express-session": "^1.18.0",
+    "express-session": "^1.18.1",
     "fflate": "^0.8.2",
     "grant": "^5.4.22",
     "jsonschema": "^1.4.1",