OpenProject: Pre-authentication RCE in openproject/openproject Docker image via default `SECRET_KEY_BASE=OVERWRITE_ME` and `cookies_serializer = :marshal`_CVE-2026-46386

{
    "lastseen": "",
    "description": "OpenProject is open-source, web-based project management software. Prior to , the official openproject/openproject Docker image ships ENV SECRET_KEY_BASE=OVERWRITE_ME as the default Rails master key. Combined with cookies_serializer = :marshal, this gives any logged-in user a deterministic Marshal-deserialization path reachable via the /my/two_factor_devices cookie reader This vulnerability is fixed in .",
    "published": "2026-06-26T19:26:39.961Z",
    "modified": "2026-06-26T19:26:39.961Z",
    "type": "cve",
    "title": "OpenProject: Pre-authentication RCE in openproject/openproject Docker image via default `SECRET_KEY_BASE=OVERWRITE_ME` and `cookies_serializer = :marshal`",
    "source": "GitHub_M",
    "references": "https://github.com/opf/openproject/security/advisories/GHSA-r85r-gjq2-f83r",
    "id": "CVE-2026-46386",
    "bulletinFamily": "",
    "cwe": [
        "CWE-502",
        "CWE-798",
        "CWE-1188",
        "CWE-1392"
    ],
    "cvelist": null,
    "sourceData": "opf openproject >= 8.3.0, < 17.2.4\nopf openproject >= 17.3.0, < 17.3.2",
    "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": ">= 8.3.0, < 17.2.4",
    "vendor": "opf",
    "ai_description": "Pre-authentication remote code execution vulnerability in OpenProject due to default SECRET_KEY_BASE and cookies_serializer settings",
    "ai_severity": "Critical",
    "ai_vendor": "OpenProject Foundation",
    "ai_product": "OpenProject",
    "ai_version": ">= 8.3.0, < 17.2.4, >= 17.3.0, < 17.3.2",
    "ai_score": 9.9
}