{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-81889",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-08-27T17:48:42.123Z",
        "datePublished": "2026-08-31T20:25:27.456Z",
        "dateUpdated": "2026-08-31T20:25:27.456Z"
    },
    "containers": {
        "cna": {
            "title": "elFinder: SSRF protection bypass via DNS rebinding in the `fsock_get_contents()` fallback",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-918",
                            "lang": "en",
                            "description": "CWE-918: Server-Side Request Forgery (SSRF)",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 8.6,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "CHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/Studio-42/elFinder/security/advisories/GHSA-8x3q-jpjh-qh5c",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/Studio-42/elFinder/security/advisories/GHSA-8x3q-jpjh-qh5c"
                },
                {
                    "name": "https://github.com/Studio-42/elFinder/commit/191372c1bbebbd36fb55af79a84b9984861390ff",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/Studio-42/elFinder/commit/191372c1bbebbd36fb55af79a84b9984861390ff"
                },
                {
                    "name": "https://github.com/Studio-42/elFinder/commit/6d997386cd0f1abab4706c220b46b0aea0ecff51",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/Studio-42/elFinder/commit/6d997386cd0f1abab4706c220b46b0aea0ecff51"
                },
                {
                    "name": "https://github.com/Studio-42/elFinder/releases/tag/2.1.70",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/Studio-42/elFinder/releases/tag/2.1.70"
                }
            ],
            "affected": [
                {
                    "vendor": "Studio-42",
                    "product": "elFinder",
                    "versions": [
                        {
                            "version": "< 2.1.70",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-08-31T20:25:27.456Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "elFinder is an open-source file manager for web, written in JavaScript using jQuery UI. Prior to 2.1.70, elFinder URL uploads in php/elFinder.class.php can bypass server-side request forgery protections when PHP cURL is unavailable because validate_address() validates $info['ip'], but get_remote_contents() selects fsock_get_contents(), which connects to $arr['host'] and performs a second DNS resolution. An attacker able to submit a URL upload can use DNS rebinding to have the first resolution return a public address and the connection resolution return a loopback or private address, causing the internal HTTP response body to be stored as an uploaded file and made readable through elFinder. After a successful fetch, get_headers($url, true) separately requests the original hostname without reusing the validated and pinned connection, creating an additional blind server-side request forgery path even when curl_get_contents() is selected. This issue is fixed in version 2.1.70."
                }
            ],
            "source": {
                "advisory": "GHSA-8x3q-jpjh-qh5c",
                "discovery": "UNKNOWN"
            }
        }
    }
}