{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-14672",
        "assignerOrgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
        "state": "PUBLISHED",
        "assignerShortName": "PostgreSQL",
        "dateReserved": "2026-07-03T20:28:13.749Z",
        "datePublished": "2026-08-13T13:00:06.212Z",
        "dateUpdated": "2026-08-29T23:07:17.450Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
                "shortName": "PostgreSQL",
                "dateUpdated": "2026-08-29T23:07:17.450Z"
            },
            "title": "PostgreSQL observable response discrepancy with non-default scram_iterations provides user existence oracle",
            "x_postgresql": {
                "component": "core server"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Observable response discrepancy in PostgreSQL SCRAM authentication allows an unauthenticated user to test the existence of a user via observing the SCRAM iteration count.  This requires the probed user to have a non-default scram_iterations count, because the authentication challenge for a nonexistent user reports the default scram_iterations.  Within major versions 16-18, minor versions before PostgreSQL 18.6, 17.11, and 16.15 are affected.  Versions before PostgreSQL 16 are unaffected."
                }
            ],
            "affected": [
                {
                    "defaultStatus": "unaffected",
                    "product": "PostgreSQL",
                    "vendor": "n/a",
                    "versions": [
                        {
                            "lessThan": "18.6",
                            "status": "affected",
                            "version": "18",
                            "versionType": "rpm"
                        },
                        {
                            "lessThan": "17.11",
                            "status": "affected",
                            "version": "17",
                            "versionType": "rpm"
                        },
                        {
                            "lessThan": "16.15",
                            "status": "affected",
                            "version": "16",
                            "versionType": "rpm"
                        }
                    ]
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-204",
                            "type": "CWE",
                            "description": "Observable Response Discrepancy"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://www.postgresql.org/support/security/CVE-2026-14672/"
                }
            ],
            "metrics": [
                {
                    "format": "CVSS",
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
                        "baseScore": 5.3,
                        "baseSeverity": "MEDIUM"
                    }
                }
            ],
            "configurations": [
                {
                    "lang": "en",
                    "value": "user's SCRAM verifier has non-default iteration count"
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "The PostgreSQL project thanks Radim Marek for reporting this problem."
                }
            ]
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-08-13T14:47:57.245811Z",
                                "id": "CVE-2026-14672",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-08-13T15:35:56.925Z"
                }
            }
        ]
    }
}