{
  "cveId": "CVE-2026-34183",
  "url": "https://patchblox.com/security/cve/CVE-2026-34183",
  "summary": "CVE-2026-34183 is fixed in 14 products on 1 platform, first by RHSA-2026:71542, released March 12, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Unbounded Memory Growth in the QUIC PATH_CHALLENGE Handler",
  "description": "Issue summary: Remote peer may exhaust heap memory of the QUIC\nserver or client by flooding it with packets containing PATH_CHALLENGE\nframes.\nImpact summary: A malicious remote peer can cause an unbounded\nmemory allocation which can lead to an abnormal termination of the\napplication acting as a QUIC client or server and a Denial of Service.\nA remote peer may exhaust heap memory by flooding the local\nQUIC stack with PATH_CHALLENGE frames. The local QUIC stack\nallocates a PATH_RESPONSE frame for every PATH_CHALLENGE it receives.\nThe allocated PATH_RESPONSE frame gets freed only when the remote\npeer acknowledges reception of the PATH_RESPONSE frame which will\nnot be done by a malicious peer.\nThe FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by\nthis issue. The QUIC stack is outside of OpenSSL FIPS module\nboundary.",
  "published": "2026-06-08T17:00:00Z",
  "severity": "Moderate",
  "cvss": 9.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
  "cwe": "Improperly Controlled Sequential Memory Allocation",
  "epss": 0.01049,
  "epssPercentile": 0.64461,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34183",
  "fixes": [
    {
      "platform": "linux",
      "product": "libssl3t64",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "3.5.3-1ubuntu3.4",
      "fix": "libssl3t64 3.5.3-1ubuntu3.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-libssl3t64-3.5.3-1ubuntu3.4",
      "released": "2026-06-24T14:07:44Z"
    },
    {
      "platform": "linux",
      "product": "libssl3t64",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "3.5.5-1ubuntu3.2",
      "fix": "libssl3t64 3.5.5-1ubuntu3.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libssl3t64-3.5.5-1ubuntu3.2",
      "released": "2026-06-08T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "3.5.6-1~deb13u2",
      "fix": "DEBIAN-CVE-2026-34183",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-34183",
      "released": "2026-06-24T14:07:24Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "Debian 14",
      "fixedVersion": "3.6.3-1",
      "fix": "DEBIAN-CVE-2026-34183",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-34183",
      "released": "2026-06-24T14:07:24Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "RHEL 10",
      "fixedVersion": "3.2.2-16.el10_0.7",
      "fix": "RHSA-2026:71542",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-71542",
      "released": "2026-03-12T22:28:45Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "RHEL 9",
      "fixedVersion": "1:3.5.5-4.el9_8",
      "fix": "RHSA-2026:25239",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-25239",
      "released": "2026-06-24T14:09:17Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "3.5.3-1ubuntu3.4",
      "fix": "openssl 3.5.3-1ubuntu3.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-openssl-3.5.3-1ubuntu3.4",
      "released": "2026-06-24T14:07:44Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "3.5.5-1ubuntu3.2",
      "fix": "openssl 3.5.5-1ubuntu3.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-openssl-3.5.5-1ubuntu3.2",
      "released": "2026-06-08T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "almalinux 10",
      "fixedVersion": "1:3.5.5-4.el10_2.alma.1",
      "fix": "ALSA-2026:25237",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-25237",
      "released": "2026-06-11T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "almalinux 9",
      "fixedVersion": "1:3.5.5-4.el9_8",
      "fix": "ALSA-2026:25239",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-25239",
      "released": "2026-06-11T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "amzn 2023",
      "fixedVersion": "1:3.5.5-1.amzn2023.0.5",
      "fix": "ALAS2023-2026-1853",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1853",
      "released": "2026-06-22T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "ol 10",
      "fixedVersion": "1:3.5.5-5.0.1.el10_2",
      "fix": "ELSA-2026-25237",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-25237",
      "released": "2026-07-28T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "ol 9",
      "fixedVersion": "1:3.5.5-4.0.1.el9_8",
      "fix": "ELSA-2026-25239",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-25239",
      "released": "2026-06-23T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "rocky 10",
      "fixedVersion": "1:3.5.5-4.el10_2",
      "fix": "RLSA-2026:25237",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-25237",
      "released": "2026-06-13T00:05:06Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "rocky 9",
      "fixedVersion": "1:3.5.5-4.el9_8",
      "fix": "RLSA-2026:25239",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-25239",
      "released": "2026-06-13T00:03:17Z"
    },
    {
      "platform": "linux",
      "product": "openssl-3",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "3.5.0-160000.8.1",
      "fix": "OPENSUSE-SU-2026:21005-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21005-1",
      "released": "2026-06-22T12:26:17Z"
    },
    {
      "platform": "linux",
      "product": "openssl-3",
      "release": "sles 15.7",
      "fixedVersion": "3.2.3-150700.5.36.1",
      "fix": "SUSE-SU-2026:2648-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2648-1",
      "released": "2026-06-26T11:06:32Z"
    },
    {
      "platform": "linux",
      "product": "openssl-3",
      "release": "sles 16.0",
      "fixedVersion": "3.5.0-160000.8.1",
      "fix": "SUSE-SU-2026:22315-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-22315-1",
      "released": "2026-06-22T12:23:46Z"
    },
    {
      "platform": "linux",
      "product": "openssl-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:3.5.5-1.amzn2023.0.5",
      "fix": "ALAS2023-2026-1853",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1853",
      "released": "2026-06-22T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "1:3.5.5-1.amzn2023.0.5",
      "fix": "ALAS2023-2026-1853",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1853",
      "released": "2026-06-22T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-devel",
      "release": "RHEL 9",
      "fixedVersion": "1:3.5.5-4.el9_8",
      "fix": "RHSA-2026:25239",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-25239",
      "released": "2026-06-24T14:09:17Z"
    },
    {
      "platform": "linux",
      "product": "openssl-devel",
      "release": "almalinux 10",
      "fixedVersion": "1:3.5.5-4.el10_2.alma.1",
      "fix": "ALSA-2026:25237",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-25237",
      "released": "2026-06-11T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-devel",
      "release": "almalinux 9",
      "fixedVersion": "1:3.5.5-4.el9_8",
      "fix": "ALSA-2026:25239",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-25239",
      "released": "2026-06-11T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:3.5.5-1.amzn2023.0.5",
      "fix": "ALAS2023-2026-1853",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1853",
      "released": "2026-06-22T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-devel",
      "release": "ol 10",
      "fixedVersion": "1:3.5.5-5.0.1.el10_2",
      "fix": "ELSA-2026-25237",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-25237",
      "released": "2026-07-28T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-devel",
      "release": "ol 9",
      "fixedVersion": "1:3.5.5-4.0.1.el9_8",
      "fix": "ELSA-2026-25239",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-25239",
      "released": "2026-06-23T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-fips-provider-latest",
      "release": "amzn 2023",
      "fixedVersion": "1:3.5.5-1.amzn2023.0.5",
      "fix": "ALAS2023-2026-1853",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1853",
      "released": "2026-06-22T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-fips-provider-latest-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:3.5.5-1.amzn2023.0.5",
      "fix": "ALAS2023-2026-1853",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1853",
      "released": "2026-06-22T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-libs",
      "release": "RHEL 9",
      "fixedVersion": "1:3.5.5-4.el9_8",
      "fix": "RHSA-2026:25239",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-25239",
      "released": "2026-06-24T14:09:17Z"
    },
    {
      "platform": "linux",
      "product": "openssl-libs",
      "release": "almalinux 10",
      "fixedVersion": "1:3.5.5-4.el10_2.alma.1",
      "fix": "ALSA-2026:25237",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-25237",
      "released": "2026-06-11T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-libs",
      "release": "almalinux 9",
      "fixedVersion": "1:3.5.5-4.el9_8",
      "fix": "ALSA-2026:25239",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-25239",
      "released": "2026-06-11T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-libs",
      "release": "amzn 2023",
      "fixedVersion": "1:3.5.5-1.amzn2023.0.5",
      "fix": "ALAS2023-2026-1853",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1853",
      "released": "2026-06-22T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-libs",
      "release": "ol 10",
      "fixedVersion": "1:3.5.5-5.0.1.el10_2",
      "fix": "ELSA-2026-25237",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-25237",
      "released": "2026-07-28T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-libs",
      "release": "ol 9",
      "fixedVersion": "1:3.5.5-4.0.1.el9_8",
      "fix": "ELSA-2026-25239",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-25239",
      "released": "2026-06-23T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-libs-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:3.5.5-1.amzn2023.0.5",
      "fix": "ALAS2023-2026-1853",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1853",
      "released": "2026-06-22T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-perl",
      "release": "RHEL 9",
      "fixedVersion": "1:3.5.5-4.el9_8",
      "fix": "RHSA-2026:25239",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-25239",
      "released": "2026-06-24T14:09:17Z"
    },
    {
      "platform": "linux",
      "product": "openssl-perl",
      "release": "almalinux 10",
      "fixedVersion": "1:3.5.5-4.el10_2.alma.1",
      "fix": "ALSA-2026:25237",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-25237",
      "released": "2026-06-11T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-perl",
      "release": "almalinux 9",
      "fixedVersion": "1:3.5.5-4.el9_8",
      "fix": "ALSA-2026:25239",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-25239",
      "released": "2026-06-11T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-perl",
      "release": "amzn 2023",
      "fixedVersion": "1:3.5.5-1.amzn2023.0.5",
      "fix": "ALAS2023-2026-1853",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1853",
      "released": "2026-06-22T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-perl",
      "release": "ol 10",
      "fixedVersion": "1:3.5.5-5.0.1.el10_2",
      "fix": "ELSA-2026-25237",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-25237",
      "released": "2026-07-28T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-perl",
      "release": "ol 9",
      "fixedVersion": "1:3.5.5-4.0.1.el9_8",
      "fix": "ELSA-2026-25239",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-25239",
      "released": "2026-06-23T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-provider-legacy",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "3.5.3-1ubuntu3.4",
      "fix": "openssl-provider-legacy 3.5.3-1ubuntu3.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-openssl-provider-legacy-3.5.3-1ubuntu3.4",
      "released": "2026-06-24T14:07:44Z"
    },
    {
      "platform": "linux",
      "product": "openssl-provider-legacy",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "3.5.5-1ubuntu3.2",
      "fix": "openssl-provider-legacy 3.5.5-1ubuntu3.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-openssl-provider-legacy-3.5.5-1ubuntu3.2",
      "released": "2026-06-08T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-snapsafe-libs",
      "release": "amzn 2023",
      "fixedVersion": "1:3.5.5-1.amzn2023.0.5",
      "fix": "ALAS2023-2026-1853",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1853",
      "released": "2026-06-22T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-snapsafe-libs-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:3.5.5-1.amzn2023.0.5",
      "fix": "ALAS2023-2026-1853",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1853",
      "released": "2026-06-22T09:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}