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GHSA-653q-5476-x79g
orvalSummary
orval's zod client emits each query parameter name as a double-quoted key in the generated zod.object({...}) request-validation schema WITHOUT escaping the double quote. A " in the query 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 OpQueryParams = zod.object({...}) executes on load) -> import-time RCE. The query parameter name is a pure data field. Verified on orval 8.19.0 / Node.
Details
export const OpQueryParams = 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, header parameter name (CVE-97) (separate reports). Distinct from orval's $ref / route-path / server-url / zod-default findings.
PoC
reproduce.sh (+ make_spec.py) attached: a query 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 query 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. maintainer-report.txt make_spec.py reproduce.sh
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The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability.
Exploitation activity has been observed. Apply available patches or mitigations urgently.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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