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OpenAdvisories
High · 7.7 CVE-2026-24132 EUVD-2026-3783GHSA-f456-rf33-4626

Orval Mock Generation Code Injection via const

Published Jan 22, 2026 · Updated Jan 23, 2026 · Assigned by GitHub_M

Description

Orval generates type-safe JS clients (TypeScript) from any valid OpenAPI v3 or Swagger v2 specification. Versions
7.19.0 and below and 8.0.0-rc.0 through 8.0.2 allow 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. The vulnerability is similar in impact to the previously reported enum x-enumDescriptions (GHSA-h526-wf6g-67jv), but it affects a different code path in the faker-based mock generator rather than @orval/core. The issue has been fixed in versions 7.20.0 and 8.0.3.

Affected products

VendorProductAffectedFixed
orval-labs orval < 7.20.0, >= 8.0.0-rc.0, < 8.0.3 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm @orval/mock < 7.20.0 7.20.0 GHSA-f456-rf33-4626
npm @orval/mock >= 8.0.0-rc.0, < 8.0.3 8.0.3 GHSA-f456-rf33-4626

References