TYPO3 CMS – Broken Access Control in File Abstraction Layer_CVE-2026-49738

{
    "lastseen": "",
    "description": "The path allowance check in GeneralUtility::isAllowedAbsPath() performed a plain string prefix comparison without requiring a directory separator boundary, causing a path like /var/www/html-other/secret.yaml to be incorrectly accepted as valid when the project root was /var/www/html. Administrator users with access to the File Abstraction Layer were able to create new file storage definitions pointing to directories outside the project root, bypassing this path check. This issue affects TYPO3 CMS versions before 10.4.57, 11.0.0-11.5.51, 12.0.0-12.4.46, 13.0.0-13.4.31 and 14.0.0-14.3.3.",
    "published": "2026-06-09T10:53:31.677Z",
    "modified": "2026-06-09T10:53:31.677Z",
    "type": "cve",
    "title": "TYPO3 CMS - Broken Access Control in File Abstraction Layer",
    "source": "TYPO3",
    "references": "https://typo3.org/security/advisory/typo3-core-sa-2026-016\nhttps://github.com/TYPO3/typo3/commit/44c2fa9807944136218a0842e3051c0a379a002d\nhttps://github.com/TYPO3/typo3/commit/150a983a5d687cedcfc33bbe9c335d9a13fd05e5",
    "id": "CVE-2026-49738",
    "bulletinFamily": "",
    "cwe": [
        "CWE-22"
    ],
    "cvelist": null,
    "sourceData": "TYPO3 TYPO3 CMS 0\nTYPO3 TYPO3 CMS 11.0.0\nTYPO3 TYPO3 CMS 12.0.0\nTYPO3 TYPO3 CMS 13.0.0\nTYPO3 TYPO3 CMS 14.0.0",
    "sourceHref": "",
    "cvss": {
        "score": 2.1,
        "severity": "LOW",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "TYPO3 CMS",
    "version": "0",
    "vendor": "TYPO3",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}