Publish GHSA-j4p8-h8mh-rh8q

Author: advisory-database[bot]

advisories/github-reviewed/2025/12/GHSA-j4p8-h8mh-rh8q/GHSA-j4p8-h8mh-rh8q.json

@@ -0,0 +1,58 @@
+{
+  "schema_version": "1.4.0",
+  "id": "GHSA-j4p8-h8mh-rh8q",
+  "modified": "2025-12-26T18:26:38Z",
+  "published": "2025-12-26T18:26:38Z",
+  "aliases": [
+    "CVE-2025-68697"
+  ],
+  "summary": "Self-hosted n8n has Legacy Code node that enables arbitrary file read/write",
+  "details": "### Impact\n\nIn self-hosted n8n instances where the Code node runs in legacy (non-task-runner) JavaScript execution mode, authenticated users with workflow editing access can invoke internal helper functions from within the Code node.\n\nThis allows a workflow editor to perform actions on the n8n host with the same privileges as the n8n process, including:\n\n- Reading files from the host filesystem (subject to any file-access restrictions configured on the instance and OS/container permissions)\n- Writing files to the host filesystem (subject to the same restrictions)\n\nStarting with n8n version 1.2.1, access to files in the n8n home directory (`.n8n`) is blocked by default. However, this does not restrict access to other parts of the filesystem unless additional file access limitations are configured.\n\n### Patches\n\n- Upgrade to **n8n version 2.0.0 or later**, where task runners are enabled by default for Code node execution.\n- On **n8n version 1.71.0 and above**, enable task runners by setting `N8N_RUNNERS_ENABLED=true`.\n\n### Workarounds\n\nIf you cannot immediately migrate to task runners:\n\n- Limit file operations by setting `N8N_RESTRICT_FILE_ACCESS_TO` to a dedicated directory (e.g., `~/.n8n-files`) and ensure it contains no sensitive data.\n- Keep `N8N_BLOCK_FILE_ACCESS_TO_N8N_FILES=true` (default) to block access to `.n8n` and user-defined config files.\n- If workflow editors are not fully trusted, consider disabling high-risk nodes (including the Code node) using `NODES_EXCLUDE`.\n\n### Resources\n\n- n8n Docs: [Task runners](https://docs.n8n.io/hosting/configuration/task-runners/)\n- n8n Docs: [Task runner environment variables](https://docs.n8n.io/hosting/configuration/environment-variables/task-runners/)\n- n8n Docs: [Security environment variables](https://docs.n8n.io/hosting/configuration/environment-variables/security/#security-environment-variables)\n- n8n Docs: [v2.0 breaking changes](https://docs.n8n.io/2-0-breaking-changes/#enable-task-runners-by-default)",
+  "severity": [
+    {
+      "type": "CVSS_V3",
+      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "npm",
+        "name": "n8n"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "2.0.0"
+            }
+          ]
+        }
+      ]
+    }
+  ],
+  "references": [
+    {
+      "type": "WEB",
+      "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-j4p8-h8mh-rh8q"
+    },
+    {
+      "type": "PACKAGE",
+      "url": "https://github.com/n8n-io/n8n"
+    }
+  ],
+  "database_specific": {
+    "cwe_ids": [
+      "CWE-269",
+      "CWE-749"
+    ],
+    "severity": "HIGH",
+    "github_reviewed": true,
+    "github_reviewed_at": "2025-12-26T18:26:38Z",
+    "nvd_published_at": null
+  }
+}