{
  "cveId": "CVE-2026-15709",
  "url": "https://patchblox.com/security/cve/CVE-2026-15709",
  "summary": "CVE-2026-15709 is fixed in 14 products on 1 platform, first by RHSA-2026:71389, released July 14, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Soupwebsocketextensiondeflate: libsoup: libsoup: websocket permessage-deflate unbounded decompression remote denial of service",
  "description": "The libsoup packages provide an HTTP client and server library for GNOME.\n\nSecurity Fix(es):\n\n* SoupWebsocketExtensionDeflate: libsoup: libsoup: WebSocket permessage-deflate Unbounded Decompression Remote Denial of Service (CVE-2026-15709)\n\n* libsoup: SoupWebsocketConnection: libsoup: WebSocket remote denial of service via oversized control frame protocol violation (CVE-2026-15711)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
  "published": "2026-07-14T09:42:00Z",
  "severity": "Important",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "cwe": "Improper Handling of Highly Compressed Data (Data Amplification)",
  "epss": 0.00883,
  "epssPercentile": 0.59408,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-15709",
  "fixes": [
    {
      "platform": "linux",
      "product": "libsoup",
      "release": "RHEL 9",
      "fixedVersion": "0:2.72.0-16.el9_8.3",
      "fix": "RHSA-2026:68234",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-68234",
      "released": "2026-09-19T18:32:55Z"
    },
    {
      "platform": "linux",
      "product": "libsoup",
      "release": "almalinux 9",
      "fixedVersion": "2.72.0-16.el9_8.3",
      "fix": "ALSA-2026:68234",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-68234",
      "released": "2026-09-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libsoup",
      "release": "amzn 2023",
      "fixedVersion": "2.72.0-6.amzn2023.0.14",
      "fix": "ALAS2023-2026-2160",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2160",
      "released": "2026-09-14T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libsoup",
      "release": "ol 9",
      "fixedVersion": "0:2.72.0-16.el9_8.3",
      "fix": "ELSA-2026-68234",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-68234",
      "released": "2026-09-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libsoup",
      "release": "rocky 9",
      "fixedVersion": "0:2.72.0-16.el9_8.3",
      "fix": "RLSA-2026:68234",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-68234",
      "released": "2026-09-17T06:06:39Z"
    },
    {
      "platform": "linux",
      "product": "libsoup-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "2.72.0-6.amzn2023.0.14",
      "fix": "ALAS2023-2026-2160",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2160",
      "released": "2026-09-14T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libsoup-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "2.72.0-6.amzn2023.0.14",
      "fix": "ALAS2023-2026-2160",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2160",
      "released": "2026-09-14T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libsoup-devel",
      "release": "RHEL 9",
      "fixedVersion": "0:2.72.0-16.el9_8.3",
      "fix": "RHSA-2026:68234",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-68234",
      "released": "2026-09-19T18:32:55Z"
    },
    {
      "platform": "linux",
      "product": "libsoup-devel",
      "release": "almalinux 9",
      "fixedVersion": "2.72.0-16.el9_8.3",
      "fix": "ALSA-2026:68234",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-68234",
      "released": "2026-09-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libsoup-devel",
      "release": "amzn 2023",
      "fixedVersion": "2.72.0-6.amzn2023.0.14",
      "fix": "ALAS2023-2026-2160",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2160",
      "released": "2026-09-14T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libsoup-devel",
      "release": "ol 9",
      "fixedVersion": "0:2.72.0-16.el9_8.3",
      "fix": "ELSA-2026-68234",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-68234",
      "released": "2026-09-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libsoup-doc",
      "release": "amzn 2023",
      "fixedVersion": "2.72.0-6.amzn2023.0.14",
      "fix": "ALAS2023-2026-2160",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2160",
      "released": "2026-09-14T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libsoup3",
      "release": "Fedora 43",
      "fixedVersion": "3.6.6-5.fc43",
      "fix": "FEDORA-2026-FCE2F41203",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-fce2f41203",
      "released": "2026-09-05T20:54:41Z"
    },
    {
      "platform": "linux",
      "product": "libsoup3",
      "release": "RHEL 10",
      "fixedVersion": "3.6.5-3.el10_0.17",
      "fix": "RHSA-2026:71389",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-71389",
      "released": "2026-07-14T09:52:00Z"
    },
    {
      "platform": "linux",
      "product": "libsoup3",
      "release": "almalinux 10",
      "fixedVersion": "3.6.5-3.el10_2.14",
      "fix": "ALSA-2026:68235",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-68235",
      "released": "2026-09-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libsoup3",
      "release": "amzn 2023",
      "fixedVersion": "3.6.6-60.amzn2023",
      "fix": "ALAS2023-2026-2159",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2159",
      "released": "2026-09-14T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libsoup3",
      "release": "ol 10",
      "fixedVersion": "0:3.6.5-3.el10_2.14",
      "fix": "ELSA-2026-68235",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-68235",
      "released": "2026-09-17T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libsoup3-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "3.6.6-5.fc43",
      "fix": "FEDORA-2026-FCE2F41203",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-fce2f41203",
      "released": "2026-09-05T20:54:41Z"
    },
    {
      "platform": "linux",
      "product": "libsoup3-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "3.6.6-60.amzn2023",
      "fix": "ALAS2023-2026-2159",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2159",
      "released": "2026-09-14T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libsoup3-debugsource",
      "release": "Fedora 43",
      "fixedVersion": "3.6.6-5.fc43",
      "fix": "FEDORA-2026-FCE2F41203",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-fce2f41203",
      "released": "2026-09-05T20:54:41Z"
    },
    {
      "platform": "linux",
      "product": "libsoup3-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "3.6.6-60.amzn2023",
      "fix": "ALAS2023-2026-2159",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2159",
      "released": "2026-09-14T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libsoup3-devel",
      "release": "Fedora 43",
      "fixedVersion": "3.6.6-5.fc43",
      "fix": "FEDORA-2026-FCE2F41203",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-fce2f41203",
      "released": "2026-09-05T20:54:41Z"
    },
    {
      "platform": "linux",
      "product": "libsoup3-devel",
      "release": "almalinux 10",
      "fixedVersion": "3.6.5-3.el10_2.14",
      "fix": "ALSA-2026:68235",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-68235",
      "released": "2026-09-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libsoup3-devel",
      "release": "amzn 2023",
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      "fix": "ALAS2023-2026-2159",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2159",
      "released": "2026-09-14T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libsoup3-devel",
      "release": "ol 10",
      "fixedVersion": "0:3.6.5-3.el10_2.14",
      "fix": "ELSA-2026-68235",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-68235",
      "released": "2026-09-17T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libsoup3-doc",
      "release": "Fedora 43",
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      "fix": "FEDORA-2026-FCE2F41203",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-fce2f41203",
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    {
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      "product": "libsoup3-doc",
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      "fix": "ALSA-2026:68235",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-68235",
      "released": "2026-09-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libsoup3-doc",
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      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2159",
      "released": "2026-09-14T09:00:00Z"
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      "fix": "ELSA-2026-68235",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-68235",
      "released": "2026-09-17T00:00:00Z"
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      "released": "2026-09-05T20:54:41Z"
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      "released": "2026-09-05T20:54:41Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}