{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-100240",
        "assignerOrgId": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
        "state": "PUBLISHED",
        "assignerShortName": "wikimedia-foundation",
        "dateReserved": "2026-09-25T16:02:34.842Z",
        "datePublished": "2026-09-29T16:26:31.215Z",
        "dateUpdated": "2026-10-01T18:07:53.717Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
                "shortName": "wikimedia-foundation",
                "dateUpdated": "2026-09-29T16:26:31.215Z"
            },
            "title": "TemplateSandbox does not check read permissions for the page being previewed",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-862",
                            "description": "CWE-862 Missing Authorization",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "impacts": [
                {
                    "capecId": "CAPEC-1",
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "Wikimedia Foundation",
                    "product": "Mediawiki - TemplateSandbox Extension",
                    "repo": "https://gerrit.wikimedia.org/g/mediawiki/extensions/TemplateSandbox/+/refs/heads/master",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "*",
                            "lessThan": "1.46.1, 1.45.5, 1.43.10",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Missing Authorization vulnerability in Wikimedia Foundation Mediawiki - TemplateSandbox Extension allows Accessing Functionality Not Properly Constrained by ACLs.\n\nThis issue affects Mediawiki - TemplateSandbox Extension: from * before 1.46.1, 1.45.5, 1.43.10.",
                    "supportingMedia": [
                        {
                            "type": "text/html",
                            "base64": false,
                            "value": "Missing Authorization vulnerability in Wikimedia Foundation Mediawiki - TemplateSandbox Extension allows Accessing Functionality Not Properly Constrained by ACLs.<p>This issue affects Mediawiki - TemplateSandbox Extension: from * before 1.46.1, 1.45.5, 1.43.10.</p>"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://phabricator.wikimedia.org/T407974"
                },
                {
                    "url": "https://gerrit.wikimedia.org/r/q/Iaf9f6e2280798af5516197257ddc0264b9ad9fb7"
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Leo768",
                    "type": "finder"
                }
            ],
            "source": {
                "discovery": "UNKNOWN"
            },
            "x_generator": {
                "engine": "Vulnogram 1.0.2"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "cvssV3_1": {
                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 9.1,
                            "attackVector": "NETWORK",
                            "baseSeverity": "CRITICAL",
                            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
                            "integrityImpact": "HIGH",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "NONE",
                            "privilegesRequired": "NONE",
                            "confidentialityImpact": "HIGH"
                        }
                    },
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-10-01T18:07:46.261263Z",
                                "id": "CVE-2026-100240",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "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": "2026-10-01T18:07:53.717Z"
                }
            }
        ]
    }
}