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CVE-2025-67735

Estado: AnalizadaMedia (6.5)—

Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.129.Final and 4.2.8.Final, the `io.netty.handler.codec.http.HttpRequestEncoder` has a CRLF injection with the request URI when constructing a request. This leads to request smuggling when `HttpRequestEncoder` is used without proper sanitization of the URI. Any application / framework using `HttpRequestEncoder` can be subject to be abused to perform request smuggling using CRLF injection. Versions 4.1.129.Final and 4.2.8.Final fix the issue.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Netty — Netty

CWE

Referencias

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  "id": "CVE-2025-67735",
  "cveTags": [],
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          "version": "2.0.3",
          "timestamp": "2025-12-16T14:26:21.658602Z"
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
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      "source": "security-advisories@github.com",
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        {
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          "product": "netty",
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            {
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              "version": ">= 4.2.0.Alpha1, < 4.2.8.Final"
            },
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  "published": "2025-12-16T01:15:52.367",
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  ],
  "lastModified": "2026-06-17T09:58:03.443",
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