Vulnerability-Lookup

GHSA-3J2G-CQMQ-CJW9

Vulnerability from github – Published: 2026-07-08 03:30 – Updated: 2026-07-08 03:30

Details

sshd in OpenSSH before 10.4 has an undocumented security-relevant behavior: GSSAPIStrictAcceptorCheck has no value if the server is in Windows Active Directory.

Severity

4.8 (Medium)


                  
                    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

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{
  "affected": [],
  "aliases": [
    "CVE-2026-59998"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-573"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-08T01:16:28Z",
    "severity": "MODERATE"
  },
  "details": "sshd in OpenSSH before 10.4 has an undocumented security-relevant behavior: GSSAPIStrictAcceptorCheck has no value if the server is in Windows Active Directory.",
  "id": "GHSA-3j2g-cqmq-cjw9",
  "modified": "2026-07-08T03:30:27Z",
  "published": "2026-07-08T03:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59998"
    },
    {
      "type": "WEB",
      "url": "https://marc.info/?l=openssh-unix-dev\u0026m=178333966933090\u0026w=2"
    },
    {
      "type": "WEB",
      "url": "https://www.openssh.org/releasenotes.html#10.4p1"
    },
    {
      "type": "WEB",
      "url": "https://www.openwall.com/lists/oss-security/2026/07/06/5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-59998 (GCVE-0-2026-59998)

Vulnerability from cvelistv5 – Published: 2026-07-08 00:11 – Updated: 2026-07-08 13:48

Summary

sshd in OpenSSH before 10.4 has an undocumented security-relevant behavior: GSSAPIStrictAcceptorCheck has no value if the server is in Windows Active Directory.

Severity

4.8 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-573 - Improper Following of Specification by Caller

Assigner

mitre

References

3 references

URL	Tags
https://www.openwall.com/lists/oss-security/2026/…
https://marc.info/?l=openssh-unix-dev&m=178333966…
https://www.openssh.org/releasenotes.html#10.4p1

Impacted products

1 product

Vendor	Product	Version
OpenBSD	OpenSSH	Affected: 0 , < 10.4 (custom)

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  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-59998",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-08T13:47:41.100414Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-08T13:48:01.134Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
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          "product": "OpenSSH",
          "vendor": "OpenBSD",
          "versions": [
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              "lessThan": "10.4",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
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        }
      ],
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                {
                  "criteria": "cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
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        }
      ],
      "metrics": [
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          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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              "lang": "en",
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        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
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          "url": "https://www.openwall.com/lists/oss-security/2026/07/06/5"
        },
        {
          "url": "https://marc.info/?l=openssh-unix-dev\u0026m=178333966933090\u0026w=2"
        },
        {
          "url": "https://www.openssh.org/releasenotes.html#10.4p1"
        }
      ],
      "x_generator": {
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  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
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    "datePublished": "2026-07-08T00:11:05.183Z",
    "dateReserved": "2026-07-08T00:11:04.817Z",
    "dateUpdated": "2026-07-08T13:48:01.134Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-3J2G-CQMQ-CJW9

CVE-2026-59998 (GCVE-0-2026-59998)

Tags

Sightings

Nomenclature