FKIE_CVE-2026-93573

Vulnerability from fkie_nvd - Published: 2026-09-18 15:17 - Updated: 2026-09-22 23:17
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Summary
A flaw was found in Netty's HTTP/1.1 decoder. This vulnerability allows a remote attacker to bypass `Transfer-Encoding` header validation by splitting the `Transfer-Encoding` field across multiple headers, with the last field containing a non-final transfer coding like `gzip` or `deflate`. This bypass can lead to HTTP request smuggling, enabling attackers to bypass security controls, desynchronize request processing, or cause requests to be processed in an unintended context.
References
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:69440
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:69470
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2026-93573
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2536964
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
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          "vendor": "Red Hat"
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          ],
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          "packageName": "netty-codec-http",
          "product": "Red Hat build of Apache Camel 4 for Quarkus 3",
          "vendor": "Red Hat"
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          "vendor": "Red Hat"
        },
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  "cveTags": [],
  "descriptions": [
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      "lang": "en",
      "value": "A flaw was found in Netty\u0027s HTTP/1.1 decoder. This vulnerability allows a remote attacker to bypass `Transfer-Encoding` header validation by splitting the `Transfer-Encoding` field across multiple headers, with the last field containing a non-final transfer coding like `gzip` or `deflate`. This bypass can lead to HTTP request smuggling, enabling attackers to bypass security controls, desynchronize request processing, or cause requests to be processed in an unintended context."
    }
  ],
  "id": "CVE-2026-93573",
  "lastModified": "2026-09-22T23:17:08.267",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.5,
        "source": "secalert@redhat.com",
        "type": "Secondary"
      }
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        "ssvcData": {
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          "options": [
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              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-18T16:19:54.114434Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-18T15:17:21.020",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:69440"
    },
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      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:69470"
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      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/security/cve/CVE-2026-93573"
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      "source": "secalert@redhat.com",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2536964"
    }
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  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
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          "lang": "en",
          "value": "CWE-444"
        }
      ],
      "source": "secalert@redhat.com",
      "type": "Secondary"
    }
  ]
}



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