OESA-2026-3351 (CVE-2026-59995)

Vulnerability from osv_openeuler – Published: 2026-08-13 14:00 – Updated: 2026-08-13 14:00 – Source website
VLAI
Summary
openssh security update
Details

An open source implementation of SSH protocol version 2

Security Fix(es):

sftp in OpenSSH before 10.4 does not properly constrain the location of downloaded files when "sftp server:/path ." is used with an attacker-controlled server.(CVE-2026-59995)

scp in OpenSSH before 10.4 may place a file in the parent directory of an intended directory when the copy occurs between two remote destinations.(CVE-2026-59996)

internal-sftp in sshd in OpenSSH before 10.4 recognizes only the first 9 command-line arguments, which can be important if a later command-line argument would have helped to ensure the intended security properties of an SFTP connection.(CVE-2026-59997)

In sshd in OpenSSH before 10.4, DisableForwarding=yes was supposed to take precedence over PermitTunnel=yes, but did not.(CVE-2026-59999)

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "openssh-9.6p1-17.oe2403sp1.aarch64.rpm",
          "openssh-askpass-9.6p1-17.oe2403sp1.aarch64.rpm",
          "openssh-clients-9.6p1-17.oe2403sp1.aarch64.rpm",
          "openssh-debuginfo-9.6p1-17.oe2403sp1.aarch64.rpm",
          "openssh-debugsource-9.6p1-17.oe2403sp1.aarch64.rpm",
          "openssh-keycat-9.6p1-17.oe2403sp1.aarch64.rpm",
          "openssh-server-9.6p1-17.oe2403sp1.aarch64.rpm",
          "pam_ssh_agent_auth-0.10.4-5.17.oe2403sp1.aarch64.rpm"
        ],
        "noarch": [
          "openssh-help-9.6p1-17.oe2403sp1.noarch.rpm"
        ],
        "src": [
          "openssh-9.6p1-17.oe2403sp1.src.rpm"
        ],
        "x86_64": [
          "openssh-9.6p1-17.oe2403sp1.x86_64.rpm",
          "openssh-askpass-9.6p1-17.oe2403sp1.x86_64.rpm",
          "openssh-clients-9.6p1-17.oe2403sp1.x86_64.rpm",
          "openssh-debuginfo-9.6p1-17.oe2403sp1.x86_64.rpm",
          "openssh-debugsource-9.6p1-17.oe2403sp1.x86_64.rpm",
          "openssh-keycat-9.6p1-17.oe2403sp1.x86_64.rpm",
          "openssh-server-9.6p1-17.oe2403sp1.x86_64.rpm",
          "pam_ssh_agent_auth-0.10.4-5.17.oe2403sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP1",
        "name": "openssh",
        "purl": "pkg:rpm/openEuler/openssh\u0026distro=openEuler-24.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "9.6p1-17.oe2403sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "An open source implementation of SSH protocol version 2\r\n\r\nSecurity Fix(es):\n\nsftp in OpenSSH before 10.4 does not properly constrain the location of downloaded files when \u0026quot;sftp server:/path .\u0026quot; is used with an attacker-controlled server.(CVE-2026-59995)\n\nscp in OpenSSH before 10.4 may place a file in the parent directory of an intended directory when the copy occurs between two remote destinations.(CVE-2026-59996)\n\ninternal-sftp in sshd in OpenSSH before 10.4 recognizes only the first 9 command-line arguments, which can be important if a later command-line argument would have helped to ensure the intended security properties of an SFTP connection.(CVE-2026-59997)\n\nIn sshd in OpenSSH before 10.4, DisableForwarding=yes was supposed to take precedence over PermitTunnel=yes, but did not.(CVE-2026-59999)",
  "id": "OESA-2026-3351",
  "modified": "2026-08-13T14:00:28Z",
  "published": "2026-08-13T14:00:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3351"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59995"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59996"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59997"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59999"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "openssh security update",
  "upstream": [
    "CVE-2026-59995",
    "CVE-2026-59996",
    "CVE-2026-59997",
    "CVE-2026-59999"
  ]
}



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