Lychee has Broken Access Control in SharingController::listAll() leaks private album sharing metadata to unauthorized users_CVE-2026-39957

{
    "lastseen": "",
    "description": "Lychee is a free, open-source photo-management tool. Prior to 7.5.4, a SQL operator-precedence bug in SharingController::listAll() causes the orWhereNotNull('user_group_id') clause to escape the ownership filter applied by the when() block. Any authenticated non-admin user with upload permission who owns at least one album can retrieve all user-group-based sharing permissions across the entire instance, including private albums owned by other users. This vulnerability is fixed in 7.5.4.",
    "published": "2026-04-09T16:14:56.133Z",
    "modified": "2026-04-09T19:08:20.555Z",
    "type": "cve",
    "title": "Lychee has Broken Access Control in SharingController::listAll() leaks private album sharing metadata to unauthorized users",
    "source": "GitHub_M",
    "references": "https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-4v4c-g2jv-4g25\nhttps://github.com/LycheeOrg/Lychee/pull/4264\nhttps://github.com/LycheeOrg/Lychee/commit/76a3f0513eca6458bf7f8c337c1ad65e59b22bcb",
    "id": "CVE-2026-39957",
    "bulletinFamily": "",
    "cwe": [
        "CWE-863"
    ],
    "cvelist": null,
    "sourceData": "LycheeOrg Lychee < 7.5.4",
    "sourceHref": "",
    "cvss": {
        "score": 2.3,
        "severity": "LOW",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/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": "",
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            "privilegesRequired": "",
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            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Lychee",
    "version": "< 7.5.4",
    "vendor": "LycheeOrg",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}