{
  "cveId": "CVE-2026-9547",
  "url": "https://patchblox.com/security/cve/CVE-2026-9547",
  "summary": "CVE-2026-9547 is fixed in 16 products on 1 platform, first by curl 8.18.0-1ubuntu2.2, released June 26, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "curl: When a libcurl-based application performs transfers via \u0060SCP://\u0060 or \u0060SFTP://\u0060 and utilizes the \u0060CURLOPT_SSH_KEYFUNCTI...",
  "description": "When a libcurl-based application performs transfers via \u0060SCP://\u0060 or \u0060SFTP://\u0060 and utilizes the \u0060CURLOPT_SSH_KEYFUNCTION\u0060 callback, it may silently accept an untrusted server. This vulnerability occurs when a server presents a host key type that does not match the specific key type already recorded for that host in the \u0060known_hosts\u0060 file. Instead of rejecting the mismatch, the callback mechanism fails to properly enforce the restriction, allowing the connection to succeed without warning and risking a potential man-in-the-middle attack.",
  "published": "2026-06-24T07:00:00Z",
  "severity": "high",
  "cvss": 8.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
  "epss": 0.00361,
  "epssPercentile": 0.30122,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "curl",
      "release": "Debian 14",
      "fixedVersion": "8.21.0~rc2-1",
      "fix": "DEBIAN-CVE-2026-9547",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-9547",
      "released": "2026-07-24T13:34:41Z"
    },
    {
      "platform": "linux",
      "product": "curl",
      "release": "RHEL 10",
      "fixedVersion": "8.12.1-1.el10_0.10",
      "fix": "RHSA-2026:72506",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-72506",
      "released": "2026-07-03T06:18:44Z"
    },
    {
      "platform": "linux",
      "product": "curl",
      "release": "RHEL 9",
      "fixedVersion": "0:7.76.1-40.el9_8.5",
      "fix": "RHSA-2026:55439",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-55439",
      "released": "2026-08-19T23:18:54Z"
    },
    {
      "platform": "linux",
      "product": "curl",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "7.81.0-1ubuntu1.25",
      "fix": "curl 7.81.0-1ubuntu1.25",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-curl-7.81.0-1ubuntu1.25",
      "released": "2026-07-03T14:54:52Z"
    },
    {
      "platform": "linux",
      "product": "curl",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "8.5.0-2ubuntu10.10",
      "fix": "curl 8.5.0-2ubuntu10.10",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-curl-8.5.0-2ubuntu10.10",
      "released": "2026-07-03T14:54:55Z"
    },
    {
      "platform": "linux",
      "product": "curl",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "8.14.1-2ubuntu1.4",
      "fix": "curl 8.14.1-2ubuntu1.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-curl-8.14.1-2ubuntu1.4",
      "released": "2026-07-03T14:54:58Z"
    },
    {
      "platform": "linux",
      "product": "curl",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "8.18.0-1ubuntu2.2",
      "fix": "curl 8.18.0-1ubuntu2.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-curl-8.18.0-1ubuntu2.2",
      "released": "2026-06-26T07:00:00Z"
    },
    {
      "platform": "linux",
      "product": "curl",
      "release": "almalinux 9",
      "fixedVersion": "7.76.1-40.el9_8.5",
      "fix": "ALSA-2026:55439",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-55439",
      "released": "2026-08-17T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "curl",
      "release": "amzn 2023",
      "fixedVersion": "8.21.0-5.amzn2023.0.1",
      "fix": "ALAS2023-2026-2132",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2132",
      "released": "2026-09-14T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "curl",
      "release": "ol 10",
      "fixedVersion": "0:8.12.1-4.el10_2.4",
      "fix": "ELSA-2026-55450",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-55450",
      "released": "2026-08-17T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "curl",
      "release": "ol 9",
      "fixedVersion": "0:7.76.1-40.el9_8.5",
      "fix": "ELSA-2026-55439",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-55439",
      "released": "2026-08-17T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "curl",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "8.14.1-160000.8.1",
      "fix": "OPENSUSE-SU-2026:21272-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21272-1",
      "released": "2026-07-08T13:46:40Z"
    },
    {
      "platform": "linux",
      "product": "curl",
      "release": "rocky 9",
      "fixedVersion": "0:7.76.1-40.el9_8.5",
      "fix": "RLSA-2026:55439",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-55439",
      "released": "2026-08-17T18:03:57Z"
    },
    {
      "platform": "linux",
      "product": "curl",
      "release": "sles 15.6",
      "fixedVersion": "8.14.1-150600.4.46.1",
      "fix": "SUSE-SU-2026:2926-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2926-1",
      "released": "2026-07-13T17:55:13Z"
    },
    {
      "platform": "linux",
      "product": "curl",
      "release": "sles 15.7",
      "fixedVersion": "8.14.1-150700.7.20.1",
      "fix": "SUSE-SU-2026:2925-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2925-1",
      "released": "2026-07-13T17:53:28Z"
    },
    {
      "platform": "linux",
      "product": "curl",
      "release": "sles 16.0",
      "fixedVersion": "8.14.1-160000.8.1",
      "fix": "SUSE-SU-2026:22582-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-22582-1",
      "released": "2026-07-08T13:46:31Z"
    },
    {
      "platform": "linux",
      "product": "curl-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "8.21.0-5.amzn2023.0.1",
      "fix": "ALAS2023-2026-2132",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2132",
      "released": "2026-09-14T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "curl-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "8.21.0-5.amzn2023.0.1",
      "fix": "ALAS2023-2026-2132",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2132",
      "released": "2026-09-14T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "curl-mini",
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      "fixedVersion": "8.14.1-160000.8.1",
      "fix": "SUSE-SU-2026:22582-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-22582-1",
      "released": "2026-07-08T13:46:31Z"
    },
    {
      "platform": "linux",
      "product": "curl-minimal",
      "release": "RHEL 9",
      "fixedVersion": "0:7.76.1-40.el9_8.5",
      "fix": "RHSA-2026:55439",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-55439",
      "released": "2026-08-19T23:18:54Z"
    },
    {
      "platform": "linux",
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      "release": "almalinux 9",
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      "fix": "ALSA-2026:55439",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-55439",
      "released": "2026-08-17T00:00:00Z"
    },
    {
      "platform": "linux",
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      "fix": "ALAS2023-2026-2132",
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      "released": "2026-09-14T09:00:00Z"
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    {
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      "fix": "ELSA-2026-55439",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-55439",
      "released": "2026-08-17T00:00:00Z"
    },
    {
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      "released": "2026-09-14T09:00:00Z"
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    {
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      "fix": "RHSA-2026:55439",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-55439",
      "released": "2026-08-19T23:18:54Z"
    },
    {
      "platform": "linux",
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      "fix": "ALSA-2026:55439",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-55439",
      "released": "2026-08-17T00:00:00Z"
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      "fix": "ALAS2023-2026-2132",
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      "released": "2026-09-14T09:00:00Z"
    },
    {
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      "fix": "ELSA-2026-55450",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-55450",
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      "fix": "ALSA-2026:55439",
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      "url": "https://patchblox.com/security/fix/linux/elsa-2026-55450",
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    {
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      "fix": "ELSA-2026-55439",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-55439",
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      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2132",
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    {
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libcurl3-gnutls-7.81.0-1ubuntu1.25",
      "released": "2026-07-03T14:54:52Z"
    },
    {
      "platform": "linux",
      "product": "libcurl3-nss",
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libcurl3-nss-7.81.0-1ubuntu1.25",
      "released": "2026-07-03T14:54:52Z"
    },
    {
      "platform": "linux",
      "product": "libcurl3t64-gnutls",
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libcurl3t64-gnutls-8.5.0-2ubuntu10.10",
      "released": "2026-07-03T14:54:55Z"
    },
    {
      "platform": "linux",
      "product": "libcurl3t64-gnutls",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "8.14.1-2ubuntu1.4",
      "fix": "libcurl3t64-gnutls 8.14.1-2ubuntu1.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-libcurl3t64-gnutls-8.14.1-2ubuntu1.4",
      "released": "2026-07-03T14:54:58Z"
    },
    {
      "platform": "linux",
      "product": "libcurl3t64-gnutls",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libcurl3t64-gnutls-8.18.0-1ubuntu2.2",
      "released": "2026-06-26T07:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libcurl4",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
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      "fix": "libcurl4 7.81.0-1ubuntu1.25",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libcurl4-7.81.0-1ubuntu1.25",
      "released": "2026-07-03T14:54:52Z"
    },
    {
      "platform": "linux",
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      "fix": "libcurl4t64 8.5.0-2ubuntu10.10",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libcurl4t64-8.5.0-2ubuntu10.10",
      "released": "2026-07-03T14:54:55Z"
    },
    {
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-libcurl4t64-8.14.1-2ubuntu1.4",
      "released": "2026-07-03T14:54:58Z"
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    {
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libcurl4t64-8.18.0-1ubuntu2.2",
      "released": "2026-06-26T07:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}