openssh, openssh-ssh1 — security advisory

{
  "id": "350bb8ff2458fa2a2a4c743d845dbb567ad3d137bd686028e639e162f1e5f5eb",
  "url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-35386",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UBUNTU-CVE-2026-35386",
    "summary": "In OpenSSH before 10.3, command execution can occur via shell metacharacters in a username within a command line. This requires a scenario where the username on the command line is untrusted, and also requires a non-default configurations of % in ssh_config.",
    "evidence": "osv:UBUNTU-CVE-2026-35386",
    "products": [
      {
        "name": {
          "value": "openssh",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1:6.6p1-2ubuntu2.13+esm4",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "1:6.2p2-6",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:6.2p2-6ubuntu1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:6.4p1-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:6.4p1-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:6.5p1-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:6.5p1-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:6.5p1-3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:6.5p1-4",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:6.5p1-6",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:6.6p1-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:6.6p1-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:6.6p1-2ubuntu1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:6.6p1-2ubuntu2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:6.6p1-2ubuntu2.2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:6.6p1-2ubuntu2.3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:6.6p1-2ubuntu2.4",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:6.6p1-2ubuntu2.6",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:6.6p1-2ubuntu2.7",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:6.6p1-2ubuntu2.8",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:6.6p1-2ubuntu2.10",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:6.6p1-2ubuntu2.11",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:6.6p1-2ubuntu2.12",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:6.6p1-2ubuntu2.13",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:6.6p1-2ubuntu2.13+esm1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:6.6p1-2ubuntu2.13+esm2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1:6.6p1-2ubuntu2.13+esm3",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "openssh",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1:7.2p2-4ubuntu2.fips.2.2.3",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1:7.2p2-4ubuntu2.fips.2.4.1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1:7.2p2-4ubuntu2.fips.2.4.2",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1:7.2p2-4ubuntu2.fips.2.8.1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1:7.2p2-4ubuntu2.fips.2.10.1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1:7.2p2-4ubuntu2.fips.2.10.2",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1:7.2p2-4ubuntu2.fips.2.10.3",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1:7.2p2-4ubuntu2.fips.2.10.4",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1:7.2p2-4ubuntu2.fips.2.10.5",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1:7.2p2-4ubuntu2.fips.2.10.6",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1:7.2p2-4ubuntu2.fips.2.10.7",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "openssh",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
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          {
            "value": "1:7.2p2-4ubuntu2.fips.2.2",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1:7.2p2-4ubuntu2.fips.2.2.1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1:7.2p2-4ubuntu2.fips.2.10.1",
            "evidence": "/affected/2/versions"
          }
        ]
      },
      {
        "name": {
          "value": "openssh-ssh1",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1:7.5p1-8",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "1:7.5p1-9",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "1:7.5p1-9build1",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "1:7.5p1-10",
            "evidence": "/affected/3/versions"
          }
        ]
      },
      {
        "name": {
          "value": "openssh",
          "evidence": "/affected/4/package/name"
        },
        "prerequisites": [],
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        "affected_versions": [
          {
            "value": "1:7.9p1-10~ubuntu18.04.fips.0.1",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "1:7.9p1-10~ubuntu18.04.fips.0.2",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "1:7.9p1-10~ubuntu18.04.fips.0.3",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "1:7.9p1-10~ubuntu18.04.fips.0.4",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "1:7.9p1-10~ubuntu18.04.fips.0.5",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "1:7.9p1-10~ubuntu18.04.fips.0.6",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "1:7.9p1-10~ubuntu18.04.fips.0.7",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "1:7.9p1-10~ubuntu18.04.fips.0.8",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "1:7.9p1-10~ubuntu18.04.fips.0.9",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "1:7.9p1-10~ubuntu18.04.fips.0.10",
            "evidence": "/affected/4/versions"
          }
        ]
      },
      {
        "name": {
          "value": "openssh",
          "evidence": "/affected/5/package/name"
        },
        "prerequisites": [],
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          {
            "value": "1:7.9p1-10~ubuntu18.04.fips.0.1",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "1:7.9p1-10~ubuntu18.04.fips.0.2",
            "evidence": "/affected/5/versions"
          }
        ]
      },
      {
        "name": {
          "value": "openssh-ssh1",
          "evidence": "/affected/6/package/name"
        },
        "prerequisites": [],
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        "affected_versions": [
          {
            "value": "1:7.5p1-11build1",
            "evidence": "/affected/6/versions"
          }
        ]
      },
      {
        "name": {
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        },
        "prerequisites": [],
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            "value": "1:8.2p1-4ubuntu0.fips.0.2.1",
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            "value": "1:8.2p1-4ubuntu0.fips.0.4.0",
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            "value": "1:8.2p1-4ubuntu0.fips.0.13",
            "evidence": "/affected/7/versions"
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      {
        "name": {
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        },
        "prerequisites": [],
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            "value": "1:8.9p1-3ubuntu0.15",
            "evidence": "/affected/9/ranges"
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        ],
        "affected_versions": [
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            "value": "1:8.4p1-6ubuntu2",
            "evidence": "/affected/9/versions"
          },
          {
            "value": "1:8.7p1-2",
            "evidence": "/affected/9/versions"
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            "value": "1:8.7p1-2build1",
            "evidence": "/affected/9/versions"
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          {
            "value": "1:8.7p1-4",
            "evidence": "/affected/9/versions"
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            "evidence": "/affected/9/versions"
          },
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            "value": "1:8.9p1-3",
            "evidence": "/affected/9/versions"
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            "value": "1:8.9p1-3ubuntu0.1",
            "evidence": "/affected/9/versions"
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          {
            "value": "1:8.9p1-3ubuntu0.3",
            "evidence": "/affected/9/versions"
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            "evidence": "/affected/9/versions"
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            "evidence": "/affected/9/versions"
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            "evidence": "/affected/9/versions"
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            "evidence": "/affected/9/versions"
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            "evidence": "/affected/9/versions"
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            "evidence": "/affected/9/versions"
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            "evidence": "/affected/9/versions"
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      },
      {
        "name": {
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        },
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            "evidence": "/affected/10/versions"
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            "evidence": "/affected/10/versions"
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        "name": {
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            "evidence": "/affected/11/versions"
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            "value": "1:8.9p1-3ubuntu1.fips.0~ppa3",
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        "name": {
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            "evidence": "/affected/12/versions"
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            "evidence": "/affected/12/versions"
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            "evidence": "/affected/12/versions"
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            "evidence": "/affected/12/versions"
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            "evidence": "/affected/12/versions"
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      {
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            "value": "1:9.3p1-1ubuntu3",
            "evidence": "/affected/13/versions"
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          {
            "value": "1:9.4p1-1ubuntu1",
            "evidence": "/affected/13/versions"
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          {
            "value": "1:9.6p1-3ubuntu1",
            "evidence": "/affected/13/versions"
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          {
            "value": "1:9.6p1-3ubuntu2",
            "evidence": "/affected/13/versions"
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          {
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            "evidence": "/affected/13/versions"
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            "evidence": "/affected/13/versions"
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            "evidence": "/affected/13/versions"
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            "evidence": "/affected/13/versions"
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            "value": "1:9.6p1-3ubuntu13.4",
            "evidence": "/affected/13/versions"
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          {
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            "evidence": "/affected/13/versions"
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          {
            "value": "1:9.6p1-3ubuntu13.7",
            "evidence": "/affected/13/versions"
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            "evidence": "/affected/13/versions"
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            "value": "1:9.6p1-3ubuntu13.9",
            "evidence": "/affected/13/versions"
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            "value": "1:9.6p1-3ubuntu13.11",
            "evidence": "/affected/13/versions"
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          {
            "value": "1:9.6p1-3ubuntu13.12",
            "evidence": "/affected/13/versions"
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          {
            "value": "1:9.6p1-3ubuntu13.13",
            "evidence": "/affected/13/versions"
          },
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            "value": "1:9.6p1-3ubuntu13.14",
            "evidence": "/affected/13/versions"
          },
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            "value": "1:9.6p1-3ubuntu13.15",
            "evidence": "/affected/13/versions"
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        ]
      },
      {
        "name": {
          "value": "openssh-ssh1",
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        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1:7.5p1-14",
            "evidence": "/affected/14/versions"
          },
          {
            "value": "1:7.5p1-15",
            "evidence": "/affected/14/versions"
          },
          {
            "value": "1:7.5p1-15build1",
            "evidence": "/affected/14/versions"
          },
          {
            "value": "1:7.5p1-16",
            "evidence": "/affected/14/versions"
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      {
        "name": {
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        "affected_versions": [
          {
            "value": "1:9.6p1-3ubuntu13.7+Fips1",
            "evidence": "/affected/15/versions"
          },
          {
            "value": "1:9.6p1-3ubuntu13.12+Fips1",
            "evidence": "/affected/15/versions"
          },
          {
            "value": "1:9.6p1-3ubuntu13.13+Fips1",
            "evidence": "/affected/15/versions"
          },
          {
            "value": "1:9.6p1-3ubuntu13.14+Fips1",
            "evidence": "/affected/15/versions"
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          {
            "value": "1:9.6p1-3ubuntu13.15+Fips1",
            "evidence": "/affected/15/versions"
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      {
        "name": {
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        "affected_versions": [
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            "value": "1:9.9p1-3ubuntu3",
            "evidence": "/affected/16/versions"
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          {
            "value": "1:9.9p1-3ubuntu3.1",
            "evidence": "/affected/16/versions"
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            "evidence": "/affected/16/versions"
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            "evidence": "/affected/16/versions"
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          {
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            "evidence": "/affected/16/versions"
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            "value": "1:10.0p1-5ubuntu5",
            "evidence": "/affected/16/versions"
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          {
            "value": "1:10.0p1-5ubuntu5.1",
            "evidence": "/affected/16/versions"
          }
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      },
      {
        "name": {
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          "evidence": "/affected/17/package/name"
        },
        "prerequisites": [],
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        "affected_versions": [
          {
            "value": "1:7.5p1-17",
            "evidence": "/affected/17/versions"
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        ]
      },
      {
        "name": {
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          "evidence": "/affected/18/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1:7.5p1-18",
            "evidence": "/affected/18/versions"
          },
          {
            "value": "1:7.5p1-18ubuntu1",
            "evidence": "/affected/18/versions"
          },
          {
            "value": "1:7.5p1-18ubuntu2",
            "evidence": "/affected/18/versions"
          }
        ]
      },
      {
        "name": {
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          "evidence": "/affected/19/package/name"
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        "prerequisites": [],
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          {
            "value": "1:10.2p1-2ubuntu3.2",
            "evidence": "/affected/19/ranges"
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        ],
        "affected_versions": [
          {
            "value": "1:10.0p1-5ubuntu5",
            "evidence": "/affected/19/versions"
          },
          {
            "value": "1:10.2p1-2ubuntu1",
            "evidence": "/affected/19/versions"
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          {
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      ],
      "modified": "2026-10-23T04:45:04.449772523Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-35386"
      ],
      "references": [
        "https://ubuntu.com/security/CVE-2026-35386",
        "https://www.cve.org/CVERecord?id=CVE-2026-35386",
        "https://www.openssh.org/releasenotes.html#10.3p1",
        "https://ubuntu.com/security/notices/USN-8222-1",
        "https://ubuntu.com/security/notices/USN-8804-1"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-35386",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/1/score"
  },
  "source_id": "core-osv",
  "document_id": 412175,
  "published_at": "2026-04-02T17:16:00+00:00"
}