CVE-2026-71868: Orval: Import-time RCE via enum-typed default -> zod module-level template literal
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 an enum 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
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Orvalto a version that resolves this vulnerability.Fixed in 8.21.0
Event History
Frequently Asked Questions
Which environments can be affected by this issue?
Any environment that imports a generated Zod schema module can execute the injected code, including developer workstations, CI systems, test environments, and applications. Exposure requires generating and importing schemas from an attacker-controlled or otherwise untrusted OpenAPI v3 or Swagger v2 specification.
What must an attacker control to trigger code execution?
The attacker needs to supply an enum default value containing a ${...} expression or a backtick in the API specification. When Orval generates the Zod schema and the resulting module is imported, the injected JavaScript can be evaluated.
What version resolves the issue?
Upgrade Orval to version 8.21.0 or later. Versions prior to 8.21.0 are affected in the Zod schema generation path.