{
  "cveId": "CVE-2026-42578",
  "url": "https://patchblox.com/security/cve/CVE-2026-42578",
  "summary": "CVE-2026-42578 is fixed in 9 products on 1 platform, first by libnetty-buffer-java 1:4.1.48-16ubuntu0.1~esm2, released May 13, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "eap8-eap-product-conf-parent: Netty is an asynchronous, event-driven network application framework",
  "description": "Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty\u0027s HttpProxyHandler constructs HTTP CONNECT requests with header validation explicitly disabled. The newInitialMessage() method creates headers using DefaultHttpHeadersFactory.headersFactory().withValidation(false), then adds user-provided outboundHeaders without any CRLF validation. This allows an attacker who can influence the outbound headers to inject arbitrary HTTP headers into the CONNECT request sent to the proxy server. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.",
  "published": "2026-05-13T12:17:00Z",
  "severity": "important",
  "cvss": 7.5,
  "epss": 0.01065,
  "epssPercentile": 0.64909,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "eap8-eap-product-conf-parent",
      "release": "RHEL 10",
      "fixedVersion": "801.7.1-1.GA_redhat_00001.1.el10eap",
      "fix": "RHSA-2026:49700",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-49700",
      "released": "2026-06-12T14:50:43Z"
    },
    {
      "platform": "linux",
      "product": "eap8-netty",
      "release": "RHEL 10",
      "fixedVersion": "4.1.135-1.Final_redhat_00001.1.el10eap",
      "fix": "RHSA-2026:49700",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-49700",
      "released": "2026-06-12T14:50:43Z"
    },
    {
      "platform": "linux",
      "product": "eap8-netty-transport-native-epoll",
      "release": "RHEL 10",
      "fixedVersion": "4.1.135-1.Final_redhat_00001.1.el10eap",
      "fix": "RHSA-2026:49700",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-49700",
      "released": "2026-06-12T14:50:43Z"
    },
    {
      "platform": "linux",
      "product": "eap8-wildfly",
      "release": "RHEL 10",
      "fixedVersion": "8.1.7.1-1.GA_redhat_00004.1.el10eap",
      "fix": "RHSA-2026:49700",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-49700",
      "released": "2026-06-12T14:50:43Z"
    },
    {
      "platform": "linux",
      "product": "libnetty-buffer-java",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1:4.1.48-16ubuntu0.1~esm2",
      "fix": "libnetty-buffer-java 1:4.1.48-16ubuntu0.1~esm2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libnetty-buffer-java-1-4.1.48-16ubuntu0.1-esm2",
      "released": "2026-05-13T12:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libnetty-common-java",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1:4.1.48-16ubuntu0.1~esm2",
      "fix": "libnetty-common-java 1:4.1.48-16ubuntu0.1~esm2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libnetty-common-java-1-4.1.48-16ubuntu0.1-esm2",
      "released": "2026-05-13T12:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libnetty-java",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1:4.1.7-4ubuntu0.1\u002Besm6",
      "fix": "libnetty-java 1:4.1.7-4ubuntu0.1\u002Besm6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libnetty-java-1-4.1.7-4ubuntu0.1-esm6",
      "released": "2026-05-13T12:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libnetty-java",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1:4.1.45-1ubuntu0.1~esm6",
      "fix": "libnetty-java 1:4.1.45-1ubuntu0.1~esm6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libnetty-java-1-4.1.45-1ubuntu0.1-esm6",
      "released": "2026-05-13T12:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libnetty-java",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1:4.1.48-4\u002Bdeb11u2ubuntu0.1\u002Besm3",
      "fix": "libnetty-java 1:4.1.48-4\u002Bdeb11u2ubuntu0.1\u002Besm3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libnetty-java-1-4.1.48-4-deb11u2ubuntu0.1-esm3",
      "released": "2026-05-13T12:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libnetty-java",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "1:4.1.48-9ubuntu0.1\u002Besm3",
      "fix": "libnetty-java 1:4.1.48-9ubuntu0.1\u002Besm3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libnetty-java-1-4.1.48-9ubuntu0.1-esm3",
      "released": "2026-05-13T12:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libnetty-java",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1:4.1.48-16ubuntu0.1~esm2",
      "fix": "libnetty-java 1:4.1.48-16ubuntu0.1~esm2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libnetty-java-1-4.1.48-16ubuntu0.1-esm2",
      "released": "2026-05-13T12:17:00Z"
    },
    {
      "platform": "linux",
      "product": "netty",
      "release": "sles 15.7",
      "fixedVersion": "4.1.133-150200.4.46.1",
      "fix": "SUSE-SU-2026:2308-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2308-1",
      "released": "2026-06-09T08:13:58Z"
    },
    {
      "platform": "linux",
      "product": "netty-tcnative",
      "release": "sles 15.6",
      "fixedVersion": "2.0.77-150200.3.39.1",
      "fix": "SUSE-SU-2026:2308-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2308-1",
      "released": "2026-06-09T08:13:58Z"
    },
    {
      "platform": "linux",
      "product": "netty-tcnative",
      "release": "sles 15.7",
      "fixedVersion": "2.0.77-150200.3.39.1",
      "fix": "SUSE-SU-2026:2308-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2308-1",
      "released": "2026-06-09T08:13:58Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}