FKIE_CVE-2026-32887

Vulnerability from fkie_nvd - Published: 2026-03-20 22:16 - Updated: 2026-04-14 18:41
Severity ?
7.4 (High) - 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.
References
security-advisories@github.comhttps://github.com/Effect-TS/effect/security/advisories/GHSA-38f7-945m-qr2gExploit, Vendor Advisory
Impacted products
Vendor Product Version
effectful effect *
To clipboard 

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  "configurations": [
    {
      "nodes": [
        {
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              "criteria": "cpe:2.3:a:effectful:effect:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "720488DF-FC4E-43E2-9D3B-5FB783EF8BEC",
              "versionEndExcluding": "3.20.0",
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            }
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          "operator": "OR"
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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\u0027s context \u2014 or no context at all. Under production traffic, `auth()` from `@clerk/nextjs/server` returns a different user\u0027s session. Version 3.20.0 contains a fix for the issue."
    },
    {
      "lang": "es",
      "value": "Effect es un framework de TypeScript que consta de varios paquetes que trabajan juntos para ayudar a construir aplicaciones TypeScript. Antes de la versi\u00f3n 3.20.0, al usar `RpcServer.toWebHandler` (o `HttpApp.toWebHandlerRuntime`) dentro de un gestor de rutas del App Router de Next.js, cualquier API de Node.js dependiente de `AsyncLocalStorage` llamada desde dentro de una fibra de Effect puede leer el contexto de otra solicitud concurrente \u2014 o ning\u00fan contexto en absoluto. Bajo tr\u00e1fico de producci\u00f3n, `auth()` de `@clerk/nextjs/server` devuelve la sesi\u00f3n de un usuario diferente. La versi\u00f3n 3.20.0 contiene una soluci\u00f3n para el problema."
    }
  ],
  "id": "CVE-2026-32887",
  "lastModified": "2026-04-14T18:41:28.923",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 5.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-20T22:16:27.980",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/Effect-TS/effect/security/advisories/GHSA-38f7-945m-qr2g"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-362"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


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Nomenclature

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