OpenProject: IDOR through /projects//settings/project_storages/ via PATCH parameter “storages_project_storage[project_folder_id]” leads to Access to Unauthorized Resources_CVE-2026-52782

{
    "lastseen": "",
    "description": "OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, there is an IDOR through /projects/<A>/settings/project_storages/<A_ps_id> via PATCH parameter \"storages_project_storage[project_folder_id]\" leads to Access to Unauthorized Resources. A project-admin in one project can hijack the managed Nextcloud or OneDrive folder of another project on the same storage by writing the victim project's project_folder_id into the attacker's Storages::ProjectStorage row. The next managed-folder sync overwrites the ACL on the referenced folder with the attacker project's user list. This vulnerability is fixed in 17.3.3 and 17.4.1.",
    "published": "2026-06-26T18:59:27.758Z",
    "modified": "2026-06-26T18:59:27.758Z",
    "type": "cve",
    "title": "OpenProject: IDOR through /projects/<A>/settings/project_storages/<A_ps_id> via PATCH parameter \"storages_project_storage[project_folder_id]\" leads to Access to Unauthorized Resources",
    "source": "GitHub_M",
    "references": "https://github.com/opf/openproject/security/advisories/GHSA-3vpx-94qx-xpw6",
    "id": "CVE-2026-52782",
    "bulletinFamily": "",
    "cwe": [
        "CWE-639"
    ],
    "cvelist": null,
    "sourceData": "opf openproject < 17.3.3\nopf openproject >= 17.4.0, < 17.4.1",
    "sourceHref": "",
    "cvss": {
        "score": 9.9,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
        "version": "3.1"
    },
    "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": "openproject",
    "version": "< 17.3.3",
    "vendor": "opf",
    "ai_description": "IDOR vulnerability allowing unauthorized access to project resources",
    "ai_severity": "Critical",
    "ai_vendor": "OpenProject Foundation",
    "ai_product": "OpenProject",
    "ai_version": "< 17.3.3, < 17.4.1",
    "ai_score": 9.9
}