Nextcloud Deck app allowed user with “Can share” permission to modify permissions of other non-owners_CVE-2025-66557

{
    "lastseen": "",
    "description": "Nextcloud Deck is a kanban style organization tool aimed at personal planning and project organization for teams integrated with Nextcloud. Prior to 1.14.6 and 1.15.2, a bug in the permission logic allowed users with \"Can share\" permission to modify the permissions of other recipients. This vulnerability is fixed in 1.14.6 and 1.15.2.",
    "published": "2025-12-05T17:28:48.642Z",
    "modified": "2025-12-05T17:28:48.642Z",
    "type": "cve",
    "title": "Nextcloud Deck app allowed user with \"Can share\" permission to modify permissions of other non-owners",
    "source": "GitHub_M",
    "references": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wwr8-hx9g-rjvv\nhttps://github.com/nextcloud/deck/pull/7131\nhttps://github.com/nextcloud/deck/commit/f1da8b30a455f02373d44154da04494c949a95ae\nhttps://hackerone.com/reports/3247499",
    "id": "CVE-2025-66557",
    "bulletinFamily": "",
    "cwe": [
        "CWE-284"
    ],
    "cvelist": null,
    "sourceData": "nextcloud security-advisories >= 1.15.0-beta.1, < 1.15.2\nnextcloud security-advisories < 1.14.6",
    "sourceHref": "",
    "cvss": {
        "score": 5.4,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
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        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
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        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "security-advisories",
    "version": ">= 1.15.0-beta.1, < 1.15.2",
    "vendor": "nextcloud",
    "ai_description": "",
    "ai_severity": "",
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    "ai_score": 0
}