CVE-2026-32887
7.4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Effect-TS | effect | < 3.20.0 | affected |
Weaknesses
- CWE-362: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: no
- Technical Impact: partial
References
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