cve-2026-93568

HIGH CVSS 7.5 nvd
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.

Timeline
Published
2026-09-18
Last Modified
2026-11-04
CVSS Details
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
Affected Products

No product information available.

Weaknesses (CWE)
CWE-20
CVSS metrics
Version Base Severity Vector Exploitability Impact Source
3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N 3.9 3.6 secalert@redhat.com
NVD metadata
NVD status
Awaiting Analysis
Source identifier
secalert@redhat.com
References
Linked Vulnerabilities
cpuoct2026csaf csaf_oracle 

{
  "cvss": 7.5,
  "datePublished": "2026-09-18T15:17:20.600",
  "dateUpdated": "2026-11-04T15:17:56.620",
  "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.",
  "id": "CVE-2026-93568",
  "raw": {
    "affected": [
      {
        "affectedData": [
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:apache_camel_quarkus:3.33"
            ],
            "defaultStatus": "affected",
            "packageName": "io.netty/netty-codec-http2",
            "product": "Red Hat Build of Apache Camel 3.33.3.SP2",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "4.1.138.Final-redhat-00001",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:debezium:3.6"
            ],
            "defaultStatus": "unaffected",
            "packageName": "netty-codec-http2",
            "product": "Red Hat Build of Debezium 3.6",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
            "cpes": [
              "cpe:/a:redhat:quarkus:3.27::el8"
            ],
            "defaultStatus": "unaffected",
            "packageName": "netty-codec-http2",
            "product": "Red Hat build of Quarkus 3.27.5.SP2",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
            "cpes": [
              "cpe:/a:redhat:quarkus:3.33::el8"
            ],
            "defaultStatus": "unaffected",
            "packageName": "netty-codec-http2",
            "product": "Red Hat build of Quarkus 3.33.3.SP2",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:jboss_enterprise_application_platform_xp:6.0"
            ],
            "defaultStatus": "unaffected",
            "packageName": "netty-codec-http2",
            "product": "Red Hat JBoss Enterprise Application Platform 8.1",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:amq_broker:7"
            ],
            "defaultStatus": "unaffected",
            "packageName": "netty-codec-http2",
            "product": "Red Hat AMQ Broker 7",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:camel_quarkus:3"
            ],
            "defaultStatus": "affected",
            "packageName": "netty-codec-http2",
            "product": "Red Hat build of Apache Camel 4 for Quarkus 3",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:camel_spring_boot:4"
            ],
            "defaultStatus": "affected",
            "packageName": "netty-codec-http2",
            "product": "Red Hat build of Apache Camel for Spring Boot 4",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:apicurio_registry:3"
            ],
            "defaultStatus": "affected",
            "packageName": "netty-codec-http2",
            "product": "Red Hat build of Apicurio Registry 3",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:build_keycloak:"
            ],
            "defaultStatus": "affected",
            "packageName": "netty-codec-http2",
            "product": "Red Hat Build of Keycloak",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:jboss_data_grid:8"
            ],
            "defaultStatus": "affected",
            "packageName": "netty-codec-http2",
            "product": "Red Hat Data Grid 8",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:jboss_fuse:7"
            ],
            "defaultStatus": "affected",
            "packageName": "netty-codec-http2",
            "product": "Red Hat Fuse 7",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
            "cpes": [
              "cpe:/a:redhat:jboss_enterprise_application_platform:7"
            ],
            "defaultStatus": "affected",
            "packageName": "netty-codec-http2",
            "product": "Red Hat JBoss Enterprise Application Platform 7",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
            "cpes": [
              "cpe:/a:redhat:jboss_enterprise_application_platform:8"
            ],
            "defaultStatus": "unaffected",
            "packageName": "netty-codec-http2",
            "product": "Red Hat JBoss Enterprise Application Platform 8",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
            "cpes": [
              "cpe:/a:redhat:jbosseapxp"
            ],
            "defaultStatus": "affected",
            "packageName": "netty-codec-http2",
            "product": "Red Hat JBoss Enterprise Application Platform Expansion Pack",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:red_hat_single_sign_on:7"
            ],
            "defaultStatus": "affected",
            "packageName": "netty-codec-http2",
            "product": "Red Hat Single Sign-On 7",
            "vendor": "Red Hat"
          }
        ],
        "source": "secalert@redhat.com"
      }
    ],
    "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."
      }
    ],
    "id": "CVE-2026-93568",
    "lastModified": "2026-11-04T15:17:56.620",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6,
          "source": "secalert@redhat.com",
          "type": "Secondary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
            "id": "CVE-2026-93568",
            "options": [
              {
                "exploitation": "none"
              },
              {
                "automatable": "yes"
              },
              {
                "technicalImpact": "partial"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-09-18T15:19:46.334573Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-09-18T15:17:20.600",
    "references": [
      {
        "source": "secalert@redhat.com",
        "url": "https://access.redhat.com/errata/RHSA-2026:69440"
      },
      {
        "source": "secalert@redhat.com",
        "url": "https://access.redhat.com/errata/RHSA-2026:69470"
      },
      {
        "source": "secalert@redhat.com",
        "url": "https://access.redhat.com/errata/RHSA-2026:70257"
      },
      {
        "source": "secalert@redhat.com",
        "url": "https://access.redhat.com/errata/RHSA-2026:83612"
      },
      {
        "source": "secalert@redhat.com",
        "url": "https://access.redhat.com/errata/RHSA-2026:95221"
      },
      {
        "source": "secalert@redhat.com",
        "url": "https://access.redhat.com/security/cve/CVE-2026-93568"
      },
      {
        "source": "secalert@redhat.com",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2536961"
      }
    ],
    "sourceIdentifier": "secalert@redhat.com",
    "vulnStatus": "Awaiting Analysis",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-20"
          }
        ],
        "source": "secalert@redhat.com",
        "type": "Secondary"
      }
    ]
  },
  "severity": "HIGH",
  "source": "nvd",
  "title": "A flaw was found in Netty"
}
Enrichment data
EPSS
View JSON Download
CISA KEV
View JSON Download
Aggregated bundle (all enrichments)
View JSON API Download bundle
View JSON API Download JSON