{
  "cveId": "CVE-2026-59842",
  "url": "https://patchblox.com/security/cve/CVE-2026-59842",
  "summary": "CVE-2026-59842 is fixed in 3 products on 1 platform, first by DEBIAN-CVE-2026-59842, released July 31, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "libssh: A flaw was found in libssh",
  "description": "A flaw was found in libssh. During server-side GSSAPI key exchange, a client-supplied Curve25519 public key shorter than the expected length is copied without proper length validation, leading to an out-of-bounds heap read. This could allow a remote unauthenticated attacker to disclose small amounts of server memory.",
  "published": "2026-07-21T11:03:52Z",
  "severity": "medium",
  "cvss": 8.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00493,
  "epssPercentile": 0.42602,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libssh",
      "release": "Debian 14",
      "fixedVersion": "0.12.1-1",
      "fix": "DEBIAN-CVE-2026-59842",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-59842",
      "released": "2026-07-31T14:18:19Z"
    },
    {
      "platform": "linux",
      "product": "libssh",
      "release": "RHEL 10",
      "fixedVersion": "0.12.0-3.el10_2",
      "fix": "RHSA-2026:55855",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-55855",
      "released": "2026-08-18T23:09:46Z"
    },
    {
      "platform": "linux",
      "product": "libssh",
      "release": "almalinux 10",
      "fixedVersion": "0.12.0-3.el10_2",
      "fix": "ALSA-2026:55855",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-55855",
      "released": "2026-08-17T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libssh",
      "release": "ol 10",
      "fixedVersion": "0:0.12.0-3.el10_2",
      "fix": "ELSA-2026-55855",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-55855",
      "released": "2026-08-17T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libssh",
      "release": "rocky 10",
      "fixedVersion": "0:0.12.0-3.el10_2",
      "fix": "RLSA-2026:55855",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-55855",
      "released": "2026-08-18T12:07:31Z"
    },
    {
      "platform": "linux",
      "product": "libssh-config",
      "release": "almalinux 10",
      "fixedVersion": "0.12.0-3.el10_2",
      "fix": "ALSA-2026:55855",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-55855",
      "released": "2026-08-17T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libssh-config",
      "release": "ol 10",
      "fixedVersion": "0:0.12.0-3.el10_2",
      "fix": "ELSA-2026-55855",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-55855",
      "released": "2026-08-17T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libssh-devel",
      "release": "almalinux 10",
      "fixedVersion": "0.12.0-3.el10_2",
      "fix": "ALSA-2026:55855",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-55855",
      "released": "2026-08-17T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libssh-devel",
      "release": "ol 10",
      "fixedVersion": "0:0.12.0-3.el10_2",
      "fix": "ELSA-2026-55855",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-55855",
      "released": "2026-08-17T00:00:00Z"
    }
  ],
  "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"
  }
}