tRPC allows users to build and consume fully typesafe APIs without schemas or code generation. Starting in version 10.27.0 and prior to versions 10.45.3 and 11.8.0, a A prototype pollution vulnerability exists in `@trpc/server`'s `formDataToObject` function, which is used by the Next.js App Router adapter. An attacker can pollute `Object.prototype` by submitting specially crafted FormData field names, potentially leading to authorization bypass, denial of service, or other security impacts. Note that this vulnerability is only present when using `experimental_caller` / `experimental_nextAppDirCaller`. Versions 10.45.3 and 11.8.0 fix the issue.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| @trpc/server(npm) | 10.27.0 | 10.45.3 | N/A |
| @trpc/server(npm) | 11.0.0 | 11.8.0 | N/A |
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