{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-63002",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-07-14T23:10:57.032Z",
        "datePublished": "2026-09-23T14:05:39.056Z",
        "dateUpdated": "2026-09-23T14:05:39.056Z"
    },
    "containers": {
        "cna": {
            "title": "REDAXO: Stored XSS in Mediapool Sync Page via Unescaped Filesystem Filenames",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-79",
                            "lang": "en",
                            "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 4.8,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "LOW",
                        "privilegesRequired": "HIGH",
                        "scope": "CHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/redaxo/core/security/advisories/GHSA-w998-qmw9-mf4m",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/redaxo/core/security/advisories/GHSA-w998-qmw9-mf4m"
                },
                {
                    "name": "https://github.com/redaxo/core/pull/6581",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/redaxo/core/pull/6581"
                },
                {
                    "name": "https://github.com/redaxo/core/commit/2daaa3a30570bc76a82f63fd21fb8c9c2cd5dc7c",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/redaxo/core/commit/2daaa3a30570bc76a82f63fd21fb8c9c2cd5dc7c"
                },
                {
                    "name": "https://github.com/redaxo/core/releases/tag/5.21.2",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/redaxo/core/releases/tag/5.21.2"
                }
            ],
            "affected": [
                {
                    "vendor": "redaxo",
                    "product": "core",
                    "versions": [
                        {
                            "version": "< 5.21.2",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-23T14:05:39.056Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "REDAXO is a PHP-based content management system. Prior to 5.21.2, redaxo/src/addons/mediapool/pages/sync.php inserts filenames held in $diffFiles from the media filesystem into the Mediapool Sync page without rex_escape(). An attacker who can place an unregistered file with HTML metacharacters in the media directory can execute script in the browser of a backend user with media[sync] permission when that user opens the Sync page, enabling session theft or unauthorized backend actions. This issue is fixed in version 5.21.2."
                }
            ],
            "source": {
                "advisory": "GHSA-w998-qmw9-mf4m",
                "discovery": "UNKNOWN"
            }
        }
    }
}