CVE-2026-23947

The record

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.

Affected packages

Related vulnerabilities

• GHSA-h526-wf6g-67jv Orval has a code injection via unsanitized x-enum-descriptions in enum generation Same vulnerability
• GHSA-gch2-phqh-fg9q Orval has Code Injection via unsanitized x-enum-descriptions using JS comments Also affects @orval/core
• CVE-2026-25141 Orval generates type-safe JS clients (TypeScript) from any valid OpenAPI v3 or Swagger v2… Also affects @orval/core
• CVE-2026-114125 Storybook is a frontend workshop for building user interface components and pages in… CWE-94
• CVE-2026-113776 virtualenv is a tool for creating isolated virtual python environments. CWE-94
• CVE-2026-112100 A vulnerability was determined in DeepPavlov up to 1.7.0. CWE-94
• CVE-2026-112095 A flaw has been found in SourceCodester Inventory System 1.0. CWE-94
• CVE-2026-112042 A security flaw has been discovered in diem-project diem up to… CWE-94