Orval: Import-time RCE via header parameter name -> computed-property-key injection in the zod client

### Summary orval's zod client emits each header parameter name as a double-quoted key in the generated zod.object({...}) request-validation schema WITHOUT escaping the double quote. A " in the header parameter name closes the key and lands in object-literal context, where an injected computed property key [expr] is evaluated when zod.object({...}) runs -- at MODULE IMPORT (export const OpHeader = zod.object({...}) executes on load) -> import-time RCE. The header parameter name is a pure data field. Verified on orval 8.19.0 / Node. ### Details export const OpHeader = zod.object({ "a":zod.string(),[require("fs").writeFileSync("PWNED","")]:zod.string(),"b": ... }) Also affects the hono client (reuses zod generation). orval escapes values in zod arrays but not keys in zod.object. Sibling fields: schema property name, query parameter name (CVE-96) (separate reports). Distinct from orval's $ref / route-path / server-url / zod-default findings. ### PoC reproduce.sh (+ make_spec.py) attached: a header parameter name that breaks the zod.object key and injects a computed key; evaluating it (= importing the module) writes the marker. Verified on 8.19.0. ### Impact JavaScript / OS command execution at import time for anyone who generates an orval zod client from an attacker-controlled spec and imports it. ### Suggested fix Escape the header parameter name for the JS string key (JSON.stringify) in the zod.object key generation; never interpolate a raw name adjacent to [ ] in object-literal position. Source Code Location: https://github.com/orval-labs/orval Affected Packages: - npm:orval, affected < 8.21.0, patched in 8.21.0 CWEs: - CWE-94: Improper Control of Generation of Code ('Code Injection') - CWE-95: Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection') - CWE-116: Improper Encoding or Escaping of Output CVSS: - CVSS_V4: score 9.3, 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 References: - https://github.com/orval-labs/orval/security/advisories/GHSA-6437-gxhq-pqv8 - https://nvd.nist.gov/vuln/detail/CVE-2026-71864 - https://github.com/orval-labs/orval/pull/3692 - https://github.com/orval-labs/orval/commit/8ef1bfdf3f9bcaf9dabfbe2e42887f1c0e159ab6 - https://github.com/orval-labs/orval/releases/tag/v8.21.0 - https://github.com/advisories/GHSA-6437-gxhq-pqv8