CVE-2026-23947

CVE-2026-23947 / CVE-2026-25141 affect Orval’s OpenAPI JS client generator. Vulnerable in versions prior to 7.21.0 (and 8.2.0) with incomplete/patchy fixes; an attacker can inject arbitrary code via x-enumDescriptions during const enum generation, leading to code execution in generated clients. T...

CVE-2026-23947 Orval MCP client is vulnerable to code injection via unsanitized x-enum-descriptions in enum generation

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...

orval MCP client is vulnerable to a code injection attack.

Impact The MCP server generation logic relies on string manipulation that incorporates the summary field from the OpenAPI specification without proper validation or escaping. This allows an attacker to "break out" of the string literal and inject arbitrary code. Here is an example OpenAPI with th...