Publish GHSA-x2mw-7j39-93xq

Author: advisory-database[bot]

advisories/github-reviewed/2026/02/GHSA-x2mw-7j39-93xq/GHSA-x2mw-7j39-93xq.json

@@ -0,0 +1,96 @@
+{
+  "schema_version": "1.4.0",
+  "id": "GHSA-x2mw-7j39-93xq",
+  "modified": "2026-02-25T21:54:19Z",
+  "published": "2026-02-25T21:54:19Z",
+  "aliases": [
+    "CVE-2026-27498"
+  ],
+  "summary": "n8n has Arbitrary Command Execution via File Write and Git Operations",
+  "details": "## Impact\nAn authenticated user with permission to create or modify workflows could chain the Read/Write Files from Disk node with git operations to achieve remote code execution. By writing to specific configuration files and then triggering a git operation, the attacker could execute arbitrary shell commands on the n8n host.\n\n## Patches\nThe issue has been fixed in n8n versions 2.2.0 and 1.123.8. Users should upgrade to one of these versions or later to remediate the vulnerability.\n\n## Workarounds\nIf upgrading is not immediately possible, administrators should consider the following temporary mitigations:\n- Limit workflow creation and editing permissions to fully trusted users only.\n- Disable the Read/Write Files from Disk node by adding `n8n-nodes-base.readWriteFile` to the `NODES_EXCLUDE` environment variable.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.",
+  "severity": [
+    {
+      "type": "CVSS_V3",
+      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"
+    },
+    {
+      "type": "CVSS_V4",
+      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "npm",
+        "name": "n8n"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "1.123.8"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "package": {
+        "ecosystem": "npm",
+        "name": "n8n"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "2.0.0"
+            },
+            {
+              "fixed": "2.2.0"
+            }
+          ]
+        }
+      ]
+    }
+  ],
+  "references": [
+    {
+      "type": "WEB",
+      "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-x2mw-7j39-93xq"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/n8n-io/n8n/commit/97365caf253978ba8e46d7bc53fa7ac3b6f67b32"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/n8n-io/n8n/commit/e22acaab3dcb2004e5fe0bf9ef2db975bde61866"
+    },
+    {
+      "type": "PACKAGE",
+      "url": "https://github.com/n8n-io/n8n"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.8"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/n8n-io/n8n/releases/tag/n8n@2.2.0"
+    }
+  ],
+  "database_specific": {
+    "cwe_ids": [
+      "CWE-94"
+    ],
+    "severity": "CRITICAL",
+    "github_reviewed": true,
+    "github_reviewed_at": "2026-02-25T21:54:19Z",
+    "nvd_published_at": null
+  }
+}