Unauthenticated Admin Token Disclosure Leading to Authentication Bypass via /debug/vars in Dgraph_CVE-2026-41492

{
    "lastseen": "",
    "description": "Dgraph is an open source distributed GraphQL database. Prior to 25.3.3, Dgraphl exposes the process command line through the unauthenticated /debug/vars endpoint on Alpha. Because the admin token is commonly supplied via the --security \"token=...\" startup flag, an unauthenticated attacker can retrieve that token and replay it in the X-Dgraph-AuthToken header to access admin-only endpoints. This is a variant of the previously fixed /debug/pprof/cmdline issue, but the current fix is incomplete because it blocks only /debug/pprof/cmdline and still serves http.DefaultServeMux, which includes expvar's /debug/vars handler. This vulnerability is fixed in 25.3.3.",
    "published": "2026-04-24T18:29:40.555Z",
    "modified": "2026-04-24T19:13:03.267Z",
    "type": "cve",
    "title": "Unauthenticated Admin Token Disclosure Leading to Authentication Bypass via /debug/vars in Dgraph",
    "source": "GitHub_M",
    "references": "https://github.com/dgraph-io/dgraph/security/advisories/GHSA-vvf7-6rmr-m29q\nhttps://github.com/dgraph-io/dgraph/releases/tag/v25.3.3",
    "id": "CVE-2026-41492",
    "bulletinFamily": "",
    "cwe": [
        "CWE-200"
    ],
    "cvelist": null,
    "sourceData": "dgraph-io dgraph < 25.3.3",
    "sourceHref": "",
    "cvss": {
        "score": 9.8,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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": "",
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "dgraph",
    "version": "< 25.3.3",
    "vendor": "dgraph-io",
    "ai_description": "Unauthenticated admin token disclosure leading to authentication bypass via /debug/vars",
    "ai_severity": "Critical",
    "ai_vendor": "Dgraph",
    "ai_product": "Dgraph",
    "ai_version": "< 25.3.3",
    "ai_score": 9.8
}