XSS vulnerability in GraphiQL

GraphiQL is the reference implementation of this monorepo, GraphQL IDE, an official project under the GraphQL Foundation. All versions of graphiql older than graphiql@1.4.7 are vulnerable to compromised HTTP schema introspection responses or schema prop values with malicious GraphQL type names, exposing a dynamic XSS attack surface that can allow code injection on operation autocomplete. In order for the attack to take place, the user must load a vulnerable schema in graphiql. There are a number of ways that can occur. By default, the schema URL is not attacker-controllable in graphiql or in its suggested implementations or examples, leaving only very complex attack vectors. If a custom implementation of graphiql's fetcher allows the schema URL to be set dynamically, such as a URL query parameter like ?endpoint= in graphql-playground, or a database provided value, then this custom graphiql implementation is vulnerable to phishing attacks, and thus much more readily available, low or no privelege level xss attacks. The URLs could look like any generic looking graphql schema URL. It should be noted that desktop clients such as Altair, Insomnia, Postwoman, do not appear to be impacted by this. This vulnerability does not impact codemirror-graphql, monaco-graphql or other dependents, as it exists in onHasCompletion.ts in graphiql. It does impact all forks of graphiql, and every released version of graphiql.

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L

在Web页面生成时对输入的转义处理不恰当(跨站脚本)

GraphQL Playground 跨站脚本漏洞

GraphQL Playground是德国Prisma实验室的一款基于GraphiQL的图形化、交互式、浏览器内的GraphQL IDE（集成开发环境）。 GraphQL Playground 1.4.7之前版本存在跨站脚本漏洞，该漏洞源于软件对于架构属性值或者GraphQL类型名称的HTTP架构内省响应缺少有效的过滤与转义，导致动态XSS攻击面，这允许攻击者可以利用该漏洞实现代码注入。

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