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    "cveMetadata": {
        "cveId": "CVE-2026-20253",
        "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "state": "PUBLISHED",
        "assignerShortName": "cisco",
        "dateReserved": "2025-10-08T11:59:15.401Z",
        "datePublished": "2026-06-10T17:16:21.242Z",
        "dateUpdated": "2026-06-19T03:55:19.206Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "product": "Splunk Enterprise",
                    "vendor": "Splunk",
                    "versions": [
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                            "version": "10.2",
                            "status": "affected",
                            "versionType": "custom",
                            "lessThan": "10.2.4"
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                            "version": "10.0",
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                            "value": "In Splunk Enterprise 10.2 versions below 10.2.4 and 10 versions below 10.0.7, an unauthenticated user could create or truncate arbitrary files through a PostgreSQL sidecar service endpoint. The vulnerability exists because the PostgreSQL sidecar service endpoint lacks authentication controls, allowing any network-reachable user to invoke file operations without credentials. Splunk Enterprise versions 9.4 and earlier are not affected. If you cannot immediately upgrade to a fixed version, you can mitigate this vulnerability by disabling the PostgreSQL sidecar service."
                        }
                    ],
                    "value": "In Splunk Enterprise 10.2 versions below 10.2.4 and 10 versions below 10.0.7, an unauthenticated user could create or truncate arbitrary files through a PostgreSQL sidecar service endpoint. The vulnerability exists because the PostgreSQL sidecar service endpoint lacks authentication controls, allowing any network-reachable user to invoke file operations without credentials. Splunk Enterprise versions 9.4 and earlier are not affected. If you cannot immediately upgrade to a fixed version, you can mitigate this vulnerability by disabling the PostgreSQL sidecar service."
                }
            ],
            "references": [
                {
                    "url": "https://advisory.splunk.com/advisories/SVD-2026-0603"
                }
            ],
            "title": "Unauthenticated Arbitrary File Creation and Truncation in a PostgreSQL Sidecar Service Endpoint in Splunk Enterprise",
            "datePublic": "2026-06-10T00:00:00.000Z",
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                        "version": "3.1",
                        "baseScore": 9.8,
                        "baseSeverity": "CRITICAL"
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                            "type": "cwe",
                            "description": "The software does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.",
                            "cweId": "CWE-306"
                        }
                    ]
                }
            ],
            "source": {
                "advisory": "SVD-2026-0603"
            },
            "credits": [
                {
                    "lang": "en",
                    "value": "Alex Hordijk (hordalex)"
                }
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                "shortName": "cisco",
                "dateUpdated": "2026-06-15T20:33:56.243Z"
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                "references": [
                    {
                        "url": "https://labs.watchtowr.com/why-use-app-level-auth-when-every-database-has-auth-splunk-enterprise-cve-2026-20253-pre-auth-rce/",
                        "tags": [
                            "exploit"
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                    },
                    {
                        "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20253",
                        "tags": [
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                "metrics": [
                    {
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                            "content": {
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                                "options": [
                                    {
                                        "Exploitation": "active"
                                    },
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                                        "Automatable": "yes"
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                                        "Technical Impact": "total"
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                                "role": "CISA Coordinator",
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                                "dateAdded": "2026-06-18",
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                "title": "CISA ADP Vulnrichment",
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                    "dateUpdated": "2026-06-19T03:55:19.206Z"
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                        "time": "2026-06-18T00:00:00.000Z",
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