fkie_cve-2026-71866

Orval generates type-safe JavaScript clients in TypeScript from OpenAPI v3 and Swagger v2 specifications. From version 8.19.0 until 8.21.0, a double quote in a schema property name is emitted into the generated zod.object({...}) schema 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 and zod object-key generation. This issue is fixed in version 8.21.0.

GHSA-6mr6-jvcr-2f25 — Orval: Import-time RCE via schema property name -> computed-property-key injection in the zod client

Affected: npm: orval

### Summary

orval's zod client emits each schema property name as a double-quoted key in the generated zod.object({...}) WITHOUT escaping the double quote. A " in a property name closes the key and lands in object-literal context, where an injected computed property key [expr] is evaluated when zod.object({...}) runs -- which is at MODULE IMPORT (the `export const X = zod.object({...})` executes on load) -> import-time RCE. The property name is a pure data field. Verified on orval 8.19.0 / Node. CWE-94 / CWE-95 / CWE-116.

### Details

```ts export const OpBody = zod.object({ "a":zod.string(),[require("fs").writeFileSync("PWNED","")]:zod.string(),"b": zod.string().optional() }) ```

Sibling: the MSW mock uses a single-quoted key (' breakout, call-time) -- separate report. The TS interface key is a type (DoS only). Distinct from orval's $ref / route-path / server-url / zod-default findings.

### PoC

reproduce.sh (+ make_spec.py) attached: a property name a":zod.string(),[require("fs").writeFileSync("<marker>","")]:zod.string(),"b -> zod.object; evaluating it (= importing the module) writes the marker. Verified on 8.19.0.

### Impact

JavaScript / OS command execution (via child_process) at import time for anyone who generates an orval zod client from an attacker-controlled spec and imports it. Estimated Critical, e.g. `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`.

### Suggested fix

Escape the property name for the JS string key (JSON.stringify) in the…

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fkie_cve-2026-71866

GHSA-6mr6-jvcr-2f25 — Orval: Import-time RCE via schema property name -> computed-property-key injection in the zod client