n8n: Credential Exfiltration via Permission Bypass_CVE-2026-54307

{
    "lastseen": "",
    "description": "n8n is an open source workflow automation platform. Prior to 1.123.55, 2.25.7, and 2.26.2, a member-level user with editor access to a shared workflow could reference credentials they do not own via specific public API endpoints. Credential ownership checks were only enforced partially leading to cross-user credential access. This issue affects instances where workflow sharing is enabled and at least one workflow has been shared with a member-level user as an Editor. This vulnerability is fixed in 1.123.55, 2.25.7, and 2.26.2.",
    "published": "2026-06-23T15:47:25.593Z",
    "modified": "2026-06-23T17:03:12.592Z",
    "type": "cve",
    "title": "n8n: Credential Exfiltration via Permission Bypass",
    "source": "GitHub_M",
    "references": "https://github.com/n8n-io/n8n/security/advisories/GHSA-pmqw-72cg-wx85",
    "id": "CVE-2026-54307",
    "bulletinFamily": "",
    "cwe": [
        "CWE-863"
    ],
    "cvelist": null,
    "sourceData": "n8n-io n8n < 1.123.55\nn8n-io n8n >= 2.0.0-rc.0, < 2.25.7\nn8n-io n8n >= 2.26.0, < 2.26.2",
    "sourceHref": "",
    "cvss": {
        "score": 8.5,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:L",
        "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": "n8n",
    "version": "< 1.123.55",
    "vendor": "n8n-io",
    "ai_description": "Credential Exfiltration via Permission Bypass in n8n workflow automation platform",
    "ai_severity": "High",
    "ai_vendor": "n8n-io",
    "ai_product": "n8n",
    "ai_version": "< 1.123.55, < 2.25.7, < 2.26.2",
    "ai_score": 8.5
}