{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-33934",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-03-24T19:50:52.103Z",
        "datePublished": "2026-03-25T23:41:51.601Z",
        "dateUpdated": "2026-03-26T18:09:35.818Z"
    },
    "containers": {
        "cna": {
            "title": "OpenEMR's Missing Authorization in show-signature.php Allows Portal Patients to Read Staff Signatures",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-639",
                            "lang": "en",
                            "description": "CWE-639: Authorization Bypass Through User-Controlled Key",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-862",
                            "lang": "en",
                            "description": "CWE-862: Missing Authorization",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 4.3,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "LOW",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/openemr/openemr/security/advisories/GHSA-w9w5-7x6h-657q",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/openemr/openemr/security/advisories/GHSA-w9w5-7x6h-657q"
                },
                {
                    "name": "https://github.com/openemr/openemr/commit/ae7ee1872d2e6300b165e24687cc90cf6847a4e5",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/openemr/openemr/commit/ae7ee1872d2e6300b165e24687cc90cf6847a4e5"
                },
                {
                    "name": "https://github.com/openemr/openemr/releases/tag/v8_0_0_3",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/openemr/openemr/releases/tag/v8_0_0_3"
                }
            ],
            "affected": [
                {
                    "vendor": "openemr",
                    "product": "openemr",
                    "versions": [
                        {
                            "version": "< 8.0.0.3",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-03-25T23:41:51.601Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "OpenEMR is a free and open source electronic health records and medical practice management application. Versions prior to 8.0.0.3 have a missing authorization check in `portal/sign/lib/show-signature.php` that allows any authenticated patient portal user to retrieve the drawn signature image of any staff member by supplying an arbitrary `user` value in the POST body. The companion write endpoint (`save-signature.php`) was already hardened against this same issue, but the read endpoint was not updated to match. Version 8.0.0.3 patches the issue."
                }
            ],
            "source": {
                "advisory": "GHSA-w9w5-7x6h-657q",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-03-26T18:09:29.017140Z",
                                "id": "CVE-2026-33934",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "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": "2026-03-26T18:09:35.818Z"
                }
            }
        ]
    }
}