CVE-2026-123158

{
  "id": "CVE-2026-123158",
  "sourceIdentifier": "[email protected]",
  "published": "2026-11-05T16:17:47.110",
  "lastModified": "2026-11-05T17:18:03.517",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "sshd in OpenSSH before 10.6p2 on Linux, when musl libc is used without PAM, lacks a workaround for a password authentication bypass (related to misinterpretation of whether a string is intended to be a password hash). For some configurations of accounts, any password between 256 and 1024 characters succeeds. An example of a platform using musl libc without PAM is Alpine Linux."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "OpenBSD",
          "product": "OpenSSH",
          "defaultStatus": "unaffected",
          "platforms": [
            "Linux"
          ],
          "versions": [
            {
              "version": "0",
              "lessThan": "10.6p2",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 5.9
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-394"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/leonjza/sshhole-lab",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/openssh/openssh-portable/commit/4353fdc43ef646c43a8dda7025cc1a898caf1482",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/predkambrij/sshhole-repro",
      "source": "[email protected]"
    },
    {
      "url": "https://hachyderm.io/@damienmiller/117563026759098135",
      "source": "[email protected]"
    },
    {
      "url": "https://marc.info/?l=openssh-unix-dev&m=179388064263131&w=2",
      "source": "[email protected]"
    },
    {
      "url": "https://news.ycombinator.com/item?id=50377976",
      "source": "[email protected]"
    },
    {
      "url": "https://news.ycombinator.com/item?id=50378228",
      "source": "[email protected]"
    },
    {
      "url": "https://www.openssh.org/releasenotes.html#10.6p2",
      "source": "[email protected]"
    },
    {
      "url": "https://alpinelinux.org/posts/2026-11-05-openssh-password-authentication-bypass/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://news.ycombinator.com/item?id=50379704",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ]
}