cve-2026-93578

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://access.redhat.com/security/updates/classification/",
      "text": "Moderate"
    },
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright © Red Hat, Inc. All rights reserved.",
      "tlp": {
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    "lang": "en",
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        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.",
        "title": "Terms of Use"
      }
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    "publisher": {
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      "contact_details": "https://access.redhat.com/security/team/contact/",
      "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
      "name": "Red Hat Product Security",
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    "references": [
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93578.json"
      }
    ],
    "title": "io.netty/netty-handler-ssl-ocsp: Netty: Missing Extended Key Usage (EKU) check in OCSP Client allows certificate revocation bypass",
    "tracking": {
      "current_release_date": "2026-09-18T16:54:13+00:00",
      "generator": {
        "date": "2026-09-18T16:54:13+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "5.3.21"
        }
      },
      "id": "CVE-2026-93578",
      "initial_release_date": "2026-09-10T00:54:25+00:00",
      "revision_history": [
        {
          "date": "2026-09-10T00:54:25+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-09-18T16:49:19+00:00",
          "number": "2",
          "summary": "Current version"
        },
        {
          "date": "2026-09-18T16:54:13+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat build of Apache Camel for Spring Boot 4",
                "product": {
                  "name": "Red Hat build of Apache Camel for Spring Boot 4",
                  "product_id": "red_hat_build_of_apache_camel_for_spring_boot_4",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:camel_spring_boot:4"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat build of Apache Camel for Spring Boot 4"
          },
          {
            "category": "product_version",
            "name": "netty-handler-ssl-ocsp",
            "product": {
              "name": "netty-handler-ssl-ocsp",
              "product_id": "netty-handler-ssl-ocsp",
              "product_identification_helper": {
                "purl": "pkg:maven/io.netty/netty-handler-ssl-ocsp@4.1.136.Final-redhat-00001"
              }
            }
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    "relationships": [
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          "name": "netty-handler-ssl-ocsp as a component of Red Hat build of Apache Camel for Spring Boot 4",
          "product_id": "red_hat_build_of_apache_camel_for_spring_boot_4:netty-handler-ssl-ocsp"
        },
        "product_reference": "netty-handler-ssl-ocsp",
        "relates_to_product_reference": "red_hat_build_of_apache_camel_for_spring_boot_4"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-93578",
      "cwe": {
        "id": "CWE-1035",
        "name": "CWE-1035"
      },
      "discovery_date": "2026-09-10T00:54:25+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2536969"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Netty's Online Certificate Status Protocol (OCSP) Client. The client fails to verify the 'id-kp-OCSPSigning' Extended Key Usage (EKU) in OCSP responder certificates. A remote attacker, holding any valid certificate issued by the same Certificate Authority (CA), can exploit this by forging 'GOOD' OCSP responses for revoked certificates. This bypasses certificate revocation checks, allowing applications using Netty's OCSP Client to accept certificates that should have been revoked, leading to an authorization bypass.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "io.netty/netty-handler-ssl-ocsp: Netty: Missing Extended Key Usage (EKU) check in OCSP Client allows certificate revocation bypass",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This Moderate flaw in Netty's OcspClient allows a network-positioned attacker, possessing any valid certificate from the same Certificate Authority, to bypass certificate revocation checks by forging \"GOOD\" OCSP responses.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "known_affected": [
          "red_hat_build_of_apache_camel_for_spring_boot_4:netty-handler-ssl-ocsp"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-93578"
        },
        {
          "category": "external",
          "summary": "RHBZ#2536969",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2536969"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-93578",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-93578"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-93578",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93578"
        }
      ],
      "release_date": "2026-09-10T00:54:25+00:00",
      "remediations": [
        {
          "category": "workaround",
          "details": "See https://github.com/netty/netty/security/advisories/GHSA-jhjp-5q4f-8wr2 for fixed versions and remediation guidance.",
          "product_ids": [
            "red_hat_build_of_apache_camel_for_spring_boot_4:netty-handler-ssl-ocsp"
          ]
        },
        {
          "category": "none_available",
          "details": "Affected",
          "product_ids": [
            "red_hat_build_of_apache_camel_for_spring_boot_4:netty-handler-ssl-ocsp"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "red_hat_build_of_apache_camel_for_spring_boot_4:netty-handler-ssl-ocsp"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate",
          "product_ids": [
            "red_hat_build_of_apache_camel_for_spring_boot_4:netty-handler-ssl-ocsp"
          ]
        }
      ],
      "title": "io.netty/netty-handler-ssl-ocsp: Netty: Missing Extended Key Usage (EKU) check in OCSP Client allows certificate revocation bypass"
    }
  ]
}