Orval
CVE-2026-23947
CRITICAL
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
3Blast Radius
ecosystem impact- 10 npm packages depend on @orval/core (10 direct, 0 indirect)
Ecosystem-wide dependent count for version 8.0.0-rc.0.
DescriptionGitHub Advisory
Orval generates type-safe JS clients (TypeScript) from any valid OpenAPI v3 or Swagger v2 specification. Versions prior to 7.19.0 until 8.0.2 are vulnerable to arbitrary code execution in environments consuming generated clients. This issue is similar in nature to CVE-2026-22785, but affects a different code path in @orval/core that was not addressed by CVE-2026-22785's fix. The vulnerability allows untrusted OpenAPI specifications to inject arbitrary TypeScript/JavaScript code into generated clients via the x-enumDescriptions field, which is embedded without proper escaping in getEnumImplementation(). I have confirmed that the injection occurs during const enum generation and results in executable code within the generated schema files. Orval 7.19.0 and 8.0.2 contain a fix for the issue.
AnalysisAI
Orval, a TypeScript API client generator, has a command injection vulnerability that allows code execution through malicious OpenAPI specifications.
Technical ContextAI
Orval processes OpenAPI v3/Swagger v2 specifications to generate TypeScript clients, but fails to sanitize specification content (CWE-77), allowing injection of OS commands that execute during the code generation process.
RemediationAI
Update Orval to the patched version. Only generate code from trusted API specifications. Review generated code before execution.
orval (TypeScript API client generator) before 7.18.0 has code injection via OpenAPI specification summary fields in MCP
Orval TypeScript code generator versions 7.19+ have a command injection vulnerability allowing RCE through malicious Ope
Code injection in Orval TypeScript API client generator versions 7.19.0 to before 7.22.0. Generated client code may be v
Arbitrary code execution in Orval before 8.21.0 arises when the code generator emits an unescaped backtick (or ${...}) f
Arbitrary code execution in Orval (orval-labs/orval) before 8.21.0 allows an attacker who controls an OpenAPI v3 or Swag
Code injection in Orval, a TypeScript/JavaScript API client generator, allows a malicious OpenAPI v3 or Swagger v2 speci
Code execution in Orval before 8.21.0 occurs when its zod schema generator processes an attacker-controlled OpenAPI v3 o
Code injection in Orval before 8.21.0 lets an attacker-controlled OpenAPI v3 / Swagger v2 specification achieve arbitrar
Arbitrary code execution in Orval (OpenAPI/Swagger TypeScript client generator) before 8.21.0 lets an attacker who contr
Code injection in Orval (orval-labs/orval) before 8.21.0 allows an attacker who controls an OpenAPI v3 or Swagger v2 spe
Code injection in Orval, a TypeScript client generator for OpenAPI v3 and Swagger v2 specs, allows arbitrary JavaScript
Code injection in Orval before 8.21.0 lets an attacker-controlled OpenAPI v3 or Swagger v2 specification execute arbitra
Same weakness CWE-77 – Command Injection
View allSame technique Command Injection
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External POC / Exploit Code
Leaving vuln.today
GHSA-h526-wf6g-67jv