CVE-2026-71867
CriticalCVSS 9.3Summary
Orval before 8.21.0 unsafely encodes single quotes in schema property names in generated MSW mock factories, allowing malicious JavaScript execution when the factory is called.
Risk Assessment
An attacker can inject code that executes in test or development environments, potentially enabling unauthorized access or further compromise.
Recommendation
Update Orval to version 8.21.0 or later, which includes the fix for safe encoding.
Original NVD description (English source)
Orval generates type-safe JavaScript clients in TypeScript from OpenAPI v3 and Swagger v2 specifications. Prior to 8.21.0, a single quote in a schema property name is emitted into single-quoted object keys in generated MSW mock factories without safe encoding. This permits attacker-controlled JavaScript to be evaluated when the generated mock factory is called by tests or an MSW handler, resulting in code execution in the developer, CI, test, or application environment. The affected code is packages/core/src/getters/keys.ts function getKey and MSW mock generation. This issue is fixed in version 8.21.0.