CVE-2026-71866: Orval Remote Code Execution Vulnerability
CRITICALCVE-2026-71866 is a CRITICAL remote code execution vulnerability (CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')) affecting Orval libraries in the npm ecosystem. The issue involves import-time rce via schema property name -> computed-property-key injection in the zod client. Remediation is available by upgrading affected packages to version 8.21.0.
CVE-2026-71866 at a Glance
How to Fix CVE-2026-71866
To remediate this vulnerability, upgrade all affected Orval dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
npm install orval@8.21.0Run the following command in your project directory to verify that all resolved dependencies use the patched release:
npm ls orvalHow to Check if You Are Affected
To determine whether your Node.js application is affected by CVE-2026-71866, inspect your project dependencies using npm:
npm ls orvalAnalyze the terminal output to locate any version of Orval in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 8.21.0), your application is affected.
Note: The npm ls orval command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection'), where the product constructs all or part of an sql command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended sql command when it is sent to a downstream component. without sufficient removal or quoting of sql syntax in user-controllable inputs, the generated sql query can cause those inputs to be interpreted as sql instead of ordinary user data. In Orval, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-71866 Affected Orval Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
orval
|
npm |
< 8.21.0
|
8.21.0
|
References
Frequently Asked Questions
What is CVE-2026-71866?
Which Orval versions are affected?
What version fixes CVE-2026-71866?
Is orval affected?
What CWE is associated with CVE-2026-71866?
How can I check npm dependencies for CVE-2026-71866?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-6mr6-jvcr-2f25",
"modified" : "2026-09-02T14:52:56Z",
"published" : "2026-09-02T14:52:56Z",
"aliases" : [ "CVE-2026-71866" ],
"summary" : "Orval: Import-time RCE via schema property name -> computed-property-key injection in the zod client",
"details" : "### Summary\n\norval's zod client emits each schema property name as a double-quoted key in the generated zod.object({...})\nWITHOUT escaping the double quote. A \" in a property name closes the key and lands in object-literal\ncontext, where an injected computed property key [expr] is evaluated when zod.object({...}) runs -- which\nis at MODULE IMPORT (the `export const X = zod.object({...})` executes on load) -> import-time RCE. The\nproperty name is a pure data field. Verified on orval 8.19.0 / Node. CWE-94 / CWE-95 / CWE-116.\n\n### Details\n\n```ts\nexport const OpBody = zod.object({ \"a\":zod.string(),[require(\"fs\").writeFileSync(\"PWNED\",\"\")]:zod.string(),\"b\": zod.string().optional() })\n```\n\nSibling: the MSW mock uses a single-quoted key (' breakout, call-time) -- separate report. The TS interface\nkey is a type (DoS only). Distinct from orval's $ref / route-path / server-url / zod-default findings.\n\n### PoC\n\nreproduce.sh (+ make_spec.py) attached: a property name a\":zod.string(),[require(\"fs\").writeFileSync(\"<marker>\",\"\")]:zod.string(),\"b\n-> zod.object; evaluating it (= importing the module) writes the marker. Verified on 8.19.0.\n\n### Impact\n\nJavaScript / OS command execution (via child_process) at import time for anyone who generates an orval zod\nclient from an attacker-controlled spec and imports it. Estimated Critical, e.g.\n`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`.\n\n### Suggested fix\n\nEscape the property name for the JS string key (JSON.stringify) in the zod.object key generation; never\ninterpolate a raw property name adjacent to [ ] in object-literal position.\n[maintainer-report.txt](https://github.com/user-attachments/files/29426038/maintainer-report.txt)\n[make_spec.py](https://github.com/user-attachments/files/29426039/make_spec.py)\n[reproduce.sh](https://github.com/user-attachments/files/29426040/reproduce.sh)",
"severity" : [ {
"type" : "CVSS_V4",
"score" : "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"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "npm",
"name" : "orval"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "8.21.0"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/orval-labs/orval/security/advisories/GHSA-6mr6-jvcr-2f25"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-71866"
}, {
"type" : "WEB",
"url" : "https://github.com/orval-labs/orval/pull/3692"
}, {
"type" : "WEB",
"url" : "https://github.com/orval-labs/orval/commit/8ef1bfdf3f9bcaf9dabfbe2e42887f1c0e159ab6"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/orval-labs/orval"
}, {
"type" : "WEB",
"url" : "https://github.com/orval-labs/orval/releases/tag/v8.21.0"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-89", "CWE-95" ],
"severity" : "CRITICAL",
"github_reviewed" : true,
"github_reviewed_at" : "2026-09-02T14:52:56Z",
"nvd_published_at" : "2026-08-19T18:17:23Z"
}
}