Angular SSR: Global Platform Injector Race Condition Leads to Cross-Request Data Leakage

Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Angular uses a DI container (the "platform injector") to hold request-specific state during server-side rendering. For historical reasons, the container was stored as a JavaScript module-scoped global variable. When multiple requests are processed concurrently, they could inadvertently share or overwrite the global injector state. In practical terms, this can lead to one request responding with data meant for a completely different request, leaking data or tokens included on the rendered page or in response headers. As long as an attacker had network access to send any traffic that received a rendered response, they may have been able to send a large number of requests and then inspect the responses for information leaks. The APIs `bootstrapApplication`, `getPlatform`, and `destroyPlatform` were vulnerable and required SSR-only breaking changes. The issue has been patched in all active release lines as well as in the v21 prerelease. Patched packages include `@angular/platform-server` 21.0.0-next.3, 20.3.0, 19.2.15, and 18.2.14 and `@angular/ssr` 21.0.0-next.3, 20.3.0, 19.2.16, and 18.2.21. Several workarounds are available. Disable SSR via Server Routes or builder options, remove any asynchronous behavior from custom `bootstrap` functions, remove uses of `getPlatform()` in application code, and/or ensure that the server build defines `ngJitMode` as false.

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使用共享资源的并发执行不恰当同步问题(竞争条件)

Angular 竞争条件问题漏洞

Angular是Angular开源的一个开发平台。用于使用 Typescript / JavaScript 和其他语言构建移动和桌面 Web 应用程序。 Angular存在竞争条件问题漏洞，该漏洞源于DI容器在多请求并发处理时可能共享或覆盖全局状态，可能导致数据泄露。

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