{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-81891",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-08-27T17:48:42.123Z",
        "datePublished": "2026-08-31T20:33:22.283Z",
        "dateUpdated": "2026-08-31T20:33:22.283Z"
    },
    "containers": {
        "cna": {
            "title": "elFinder: ZIP extraction bypasses uploadDeny MIME filter allowing PHP file upload (RCE)",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-434",
                            "lang": "en",
                            "description": "CWE-434: Unrestricted Upload of File with Dangerous Type",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "HIGH",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 8.1,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/Studio-42/elFinder/security/advisories/GHSA-gxmj-r5rf-ggwq",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/Studio-42/elFinder/security/advisories/GHSA-gxmj-r5rf-ggwq"
                },
                {
                    "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/dd73e702820c146a192969800ee674ecdb208365",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/Studio-42/elFinder/commit/dd73e702820c146a192969800ee674ecdb208365"
                },
                {
                    "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": "2026-08-31T20:33:22.283Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "elFinder is an open-source file manager for web, written in JavaScript using jQuery UI. Prior to 2.1.70, checkExtractItems() in php/elFinderVolumeDriver.class.php calls mimetypeInternalDetect() without passing the result through mimeTypeNormalize(). Because the .phtml, .phar, .php5, and .php3 extensions are absent from mime.types, the staticMimeMap entries that map them to text/x-php are not applied, and allowPutMime() permits extraction even when uploadDeny blocks text/x-php. An attacker with ZIP upload permission can extract PHP-executable files into a web-accessible files/ directory and achieve remote code execution when the server executes those extensions. This issue is fixed in version 2.1.70."
                }
            ],
            "source": {
                "advisory": "GHSA-gxmj-r5rf-ggwq",
                "discovery": "UNKNOWN"
            }
        }
    }
}