{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-33687",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-03-23T16:34:59.932Z",
        "datePublished": "2026-03-26T21:47:55.573Z",
        "dateUpdated": "2026-03-27T20:28:53.385Z"
    },
    "containers": {
        "cna": {
            "title": "Sharp has Unrestricted File Upload via Client-Controlled Validation Rules",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-434",
                            "lang": "en",
                            "description": "CWE-434: Unrestricted Upload of File with Dangerous Type",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 8.8,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "LOW",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/code16/sharp/security/advisories/GHSA-fr76-5637-w3g9",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/code16/sharp/security/advisories/GHSA-fr76-5637-w3g9"
                },
                {
                    "name": "https://github.com/code16/sharp/pull/714",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/code16/sharp/pull/714"
                },
                {
                    "name": "https://github.com/code16/sharp/releases/tag/v9.20.0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/code16/sharp/releases/tag/v9.20.0"
                },
                {
                    "name": "https://laravel.com/docs/13.x/filesystem",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://laravel.com/docs/13.x/filesystem"
                }
            ],
            "affected": [
                {
                    "vendor": "code16",
                    "product": "sharp",
                    "versions": [
                        {
                            "version": "< 9.20.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-03-26T21:53:26.004Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Sharp is a content management framework built for Laravel as a package. Versions prior to 9.20.0 contain a vulnerability in the file upload endpoint that allows authenticated users to bypass all file type restrictions. The upload endpoint within the `ApiFormUploadController` accepts a client-controlled `validation_rule` parameter. This parameter is directly passed into the Laravel validator without sufficient server-side enforcement. By intercepting the request and sending `validation_rule[]=file`, an attacker can completely bypass all MIME type and file extension restrictions. This issue has been addressed in version 9.20.0 by removing the client-controlled validation rules and strictly defining upload rules server-side. As a workaround, ensure that the storage disk used for Sharp uploads is strictly private. Under default configurations, an attacker cannot directly execute uploaded PHP files unless a public disk configuration is explicitly used."
                }
            ],
            "source": {
                "advisory": "GHSA-fr76-5637-w3g9",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-03-27T20:28:24.566534Z",
                                "id": "CVE-2026-33687",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-03-27T20:28:53.385Z"
                }
            }
        ]
    }
}