CVE-2026-71871

Summary

Orval generates type-safe JavaScript clients in TypeScript from OpenAPI v3 and Swagger v2 specifications. Prior to 8.21.0, a ${…} expression or backtick in a header parameter default is emitted into a module-level template literal emitted by zod schema generation without safe encoding. This permits attacker-controlled JavaScript to be evaluated when the generated zod schema module is imported, resulting in code execution in the developer, CI, test, or application environment. The affected code is packages/zod/src/index.ts function formatDefaultValue. This issue is fixed in version 8.21.0.

Affected Software

VendorProductVersion RangeStatus
orval-labsorval< 8.21.0affected

Weaknesses

  • CWE-94: CWE-94: Improper Control of Generation of Code ('Code Injection')
  • CWE-116: CWE-116: Improper Encoding or Escaping of Output
  • CWE-1336: CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine

References