Description

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.

INFO

Published Date :

2026-01-20T00:19:48.901Z

Last Modified :

2026-01-21T17:09:11.690Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-23947 vulnerability.

Vendors Products
Orval
  • Orval
Orval-labs
  • Orval
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-23947.

URL Resource
https://github.com/orval-labs/orval/releases/tag/v8.0.2 cve-icon cve-icon
https://github.com/orval-labs/orval/security/advisories/GHSA-h526-wf6g-67jv cve-icon cve-icon
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