FKIE_CVE-2026-14681

Vulnerability from fkie_nvd - Published: 2026-08-13 13:17 - Updated: 2026-08-13 16:17
Severity
4.2 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Summary
Improper enforcement of message integrity in PostgreSQL GSSAPI support allows a user to negotiate GSSAPI contrary to pg_hba.conf rules, via initial direct TLS connection. Despite a pg_hba.conf that appears to require GSSAPI, the connection may exchange data over TLS encryption alone. If the TLS settings are more permissive than the GSS settings, the connection may continue with lesser protection. Within major versions 17-18, minor versions before PostgreSQL 18.5 and 17.11 are affected. Versions before PostgreSQL 17 are unaffected.
References
f86ef6dc-4d3a-42ad-8f28-e6d5547a5007https://www.postgresql.org/support/security/CVE-2026-14681/
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "PostgreSQL",
          "vendor": "n/a",
          "versions": [
            {
              "lessThan": "18.5",
              "status": "affected",
              "version": "18",
              "versionType": "rpm"
            },
            {
              "lessThan": "17.11",
              "status": "affected",
              "version": "17",
              "versionType": "rpm"
            }
          ]
        }
      ],
      "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper enforcement of message integrity in PostgreSQL GSSAPI support allows a user to negotiate GSSAPI contrary to pg_hba.conf rules, via initial direct TLS connection.  Despite a pg_hba.conf that appears to require GSSAPI, the connection may exchange data over TLS encryption alone.  If the TLS settings are more permissive than the GSS settings, the connection may continue with lesser protection.  Within major versions 17-18, minor versions before PostgreSQL 18.5 and 17.11 are affected.  Versions before PostgreSQL 17 are unaffected."
    }
  ],
  "id": "CVE-2026-14681",
  "lastModified": "2026-08-13T16:17:57.253",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.2,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 2.5,
        "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-14681",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-13T14:38:14.009555Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-13T13:17:45.523",
  "references": [
    {
      "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
      "url": "https://www.postgresql.org/support/security/CVE-2026-14681/"
    }
  ],
  "sourceIdentifier": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-924"
        }
      ],
      "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
      "type": "Secondary"
    }
  ]
}



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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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