← Back to CVE Explorer

CVE-2026-93568

Full vulnerability record from the local CVENow database.

Description

A flaw was found in Netty. A remote attacker could exploit this vulnerability by sending specially crafted HTTP/2 or HTTP/3 Extended CONNECT requests. Netty's HTTP-object conversion path incorrectly processes these requests as regular HTTP/1.1 CONNECT requests, leading to a loss of critical protocol and path information. This misinterpretation can allow attackers to bypass security policies, such as routing or authorization logic, in applications that rely on Netty for HTTP/2 or HTTP/3 communication, resulting in integrity loss.

Severity
HIGH
CVSS score
7.5 (v3.1)
Vulnerability status
Awaiting Analysis
Source identifier
[email protected]
Published
2026-09-18 15:17:20.600000
Last modified
2026-10-19 11:17:25.990000
View original CVE JSON 
{
  "id": "CVE-2026-93568",
  "sourceIdentifier": "[email protected]",
  "published": "2026-09-18T15:17:20.600",
  "lastModified": "2026-10-19T11:17:25.990",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in Netty. A remote attacker could exploit this vulnerability by sending specially crafted HTTP/2 or HTTP/3 Extended CONNECT requests. Netty's HTTP-object conversion path incorrectly processes these requests as regular HTTP/1.1 CONNECT requests, leading to a loss of critical protocol and path information. This misinterpretation can allow attackers to bypass security policies, such as routing or authorization logic, in applications that rely on Netty for HTTP/2 or HTTP/3 communication, resulting in integrity loss."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Red Hat",
          "product": "Red Hat Build of Apache Camel 3.33.3.SP2",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "io.netty/netty-codec-http2",
          "cpes": [
            "cpe:/a:redhat:apache_camel_quarkus:3.33"
          ],
          "versions": [
            {
              "version": "4.1.138.Final-redhat-00001",
              "lessThan": "*",
              "versionType": "rpm",
              "status": "unaffected"
            }
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat Build of Debezium 3.6",
          "defaultStatus": "unaffected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "netty-codec-http2",
          "cpes": [
            "cpe:/a:redhat:debezium:3.6"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat build of Quarkus 3.27.5.SP2",
          "defaultStatus": "unaffected",
          "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
          "packageName": "netty-codec-http2",
          "cpes": [
            "cpe:/a:redhat:quarkus:3.27::el8"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat build of Quarkus 3.33.3.SP2",
          "defaultStatus": "unaffected",
          "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
          "packageName": "netty-codec-http2",
          "cpes": [
            "cpe:/a:redhat:quarkus:3.33::el8"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat AMQ Broker 7",
          "defaultStatus": "unaffected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "netty-codec-http2",
          "cpes": [
            "cpe:/a:redhat:amq_broker:7"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat build of Apache Camel 4 for Quarkus 3",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "netty-codec-http2",
          "cpes": [
            "cpe:/a:redhat:camel_quarkus:3"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat build of Apache Camel for Spring Boot 4",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "netty-codec-http2",
          "cpes": [
            "cpe:/a:redhat:camel_spring_boot:4"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat build of Apicurio Registry 3",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "netty-codec-http2",
          "cpes": [
            "cpe:/a:redhat:apicurio_registry:3"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat Build of Keycloak",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "netty-codec-http2",
          "cpes": [
            "cpe:/a:redhat:build_keycloak:"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat Data Grid 8",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "netty-codec-http2",
          "cpes": [
            "cpe:/a:redhat:jboss_data_grid:8"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat Fuse 7",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "netty-codec-http2",
          "cpes": [
            "cpe:/a:redhat:jboss_fuse:7"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat JBoss Enterprise Application Platform 7",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
          "packageName": "netty-codec-http2",
          "cpes": [
            "cpe:/a:redhat:jboss_enterprise_application_platform:7"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat JBoss Enterprise Application Platform 8",
          "defaultStatus": "unaffected",
          "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
          "packageName": "netty-codec-http2",
          "cpes": [
            "cpe:/a:redhat:jboss_enterprise_application_platform:8"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat JBoss Enterprise Application Platform Expansion Pack",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
          "packageName": "netty-codec-http2",
          "cpes": [
            "cpe:/a:redhat:jbosseapxp"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat Single Sign-On 7",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "netty-codec-http2",
          "cpes": [
            "cpe:/a:redhat:red_hat_single_sign_on:7"
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-09-18T15:19:46.334573Z",
          "id": "CVE-2026-93568",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:69440",
      "source": "[email protected]"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:69470",
      "source": "[email protected]"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:70257",
      "source": "[email protected]"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:83612",
      "source": "[email protected]"
    },
    {
      "url": "https://access.redhat.com/security/cve/CVE-2026-93568",
      "source": "[email protected]"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2536961",
      "source": "[email protected]"
    }
  ]
}