{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2025-53479",
        "assignerOrgId": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
        "state": "PUBLISHED",
        "assignerShortName": "wikimedia-foundation",
        "dateReserved": "2025-06-30T15:20:44.461Z",
        "datePublished": "2025-07-08T17:16:36.081Z",
        "dateUpdated": "2025-07-10T13:18:39.505Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "defaultStatus": "unaffected",
                    "product": "Mediawiki - CheckUser extension",
                    "vendor": "Wikimedia Foundation",
                    "versions": [
                        {
                            "lessThan": "1.42.7",
                            "status": "affected",
                            "version": "1.42.x",
                            "versionType": "semver"
                        },
                        {
                            "lessThan": "1.43.2",
                            "status": "affected",
                            "version": "1.43.x",
                            "versionType": "semver"
                        }
                    ]
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "supportingMedia": [
                        {
                            "base64": false,
                            "type": "text/html",
                            "value": "<p>The CheckUser extension’s Special:CheckUser interface is vulnerable to reflected XSS via the rev-deleted-user message. This message is rendered without proper escaping, making it possible to inject JavaScript through the uselang=x-xss language override mechanism.</p>\n\n\n<p>This issue affects Mediawiki - CheckUser extension: from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.</p>"
                        }
                    ],
                    "value": "The CheckUser extension’s Special:CheckUser interface is vulnerable to reflected XSS via the rev-deleted-user message. This message is rendered without proper escaping, making it possible to inject JavaScript through the uselang=x-xss language override mechanism.\n\n\n\n\nThis issue affects Mediawiki - CheckUser extension: from 1.42.X before 1.42.7, from 1.43.X before 1.43.2."
                }
            ],
            "impacts": [
                {
                    "capecId": "CAPEC-591",
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "CAPEC-591 Reflected XSS"
                        }
                    ]
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-79",
                            "description": "CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
                "shortName": "wikimedia-foundation",
                "dateUpdated": "2025-07-09T10:38:20.867Z"
            },
            "references": [
                {
                    "url": "https://phabricator.wikimedia.org/T394693"
                },
                {
                    "url": "https://gerrit.wikimedia.org/r/q/I159e14543912cb3bc7f4a00c3090c0285b154786"
                }
            ],
            "source": {
                "discovery": "UNKNOWN"
            },
            "title": "CheckUser: Reflected Cross-Site Scripting (XSS) in Special:CheckUser via unsanitized internationalized message",
            "x_generator": {
                "engine": "Vulnogram 0.2.0"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://phabricator.wikimedia.org/T394693",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "cvssV3_1": {
                            "scope": "CHANGED",
                            "version": "3.1",
                            "baseScore": 5.4,
                            "attackVector": "NETWORK",
                            "baseSeverity": "MEDIUM",
                            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
                            "integrityImpact": "LOW",
                            "userInteraction": "REQUIRED",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "NONE",
                            "privilegesRequired": "LOW",
                            "confidentialityImpact": "LOW"
                        }
                    },
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2025-07-10T13:18:02.588187Z",
                                "id": "CVE-2025-53479",
                                "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": "2025-07-10T13:18:39.505Z"
                }
            }
        ]
    }
}