cvedb.io
CVE-2026-32887
HIGH · CVSS 7.4
EPSS exploitation probability: 0%
Published 2026-03-20T22:16:27.980 · Last modified 2026-06-17T10:36:30.770

Summary

Effect is a TypeScript framework that consists of several packages that work together to help build TypeScript applications. Prior to version 3.20.0, when using `RpcServer.toWebHandler` (or `HttpApp.toWebHandlerRuntime`) inside a Next.js App Router route handler, any Node.js `AsyncLocalStorage`-dependent API called from within an Effect fiber can read another concurrent request's context — or no context at all. Under production traffic, `auth()` from `@clerk/nextjs/server` returns a different user's session. Version 3.20.0 contains a fix for the issue.

Affected products

effectful — effect

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.