Rocket.Chat: Any Authenticated User Can Permanently Deregister Workspace from Rocket.Chat Cloud via Unprotected `/api/v1/fingerprint` Endpoint_CVE-2026-55762

{
    "lastseen": "",
    "description": "Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, and 7.10.13, the POST /api/v1/fingerprint REST endpoint enforces authentication (authRequired: true) but performs no authorization check. Any authenticated user \u2014 including a standard user role account \u2014 can call this endpoint with {\"setDeploymentAs\": \"new-workspace\"} to permanently deregister the workspace from Rocket.Chat Cloud. This wipes all cloud credentials, removes the workspace license, breaks push notifications for all users, and requires manual re-registration to recover. This vulnerability is fixed in 8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, and 7.10.13.",
    "published": "2026-06-24T21:08:01.271Z",
    "modified": "2026-06-24T21:08:01.271Z",
    "type": "cve",
    "title": "Rocket.Chat: Any Authenticated User Can Permanently Deregister Workspace from Rocket.Chat Cloud via Unprotected `/api/v1/fingerprint` Endpoint",
    "source": "GitHub_M",
    "references": "https://github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-8hhc-j325-rxqp",
    "id": "CVE-2026-55762",
    "bulletinFamily": "",
    "cwe": [
        "CWE-862"
    ],
    "cvelist": null,
    "sourceData": "RocketChat Rocket.Chat >= 8.5.0-rc.0, < 8.5.1\nRocketChat Rocket.Chat >= 8.4.0-rc.0, < 8.4.4\nRocketChat Rocket.Chat >= 8.3.0-rc.0, < 8.3.6\nRocketChat Rocket.Chat >= 8.2.0-rc.0, < 8.2.6\nRocketChat Rocket.Chat >= 8.1.0-rc.0, < 8.1.6\nRocketChat Rocket.Chat >= 7.11.0-rc.0, < 8.0.7\nRocketChat Rocket.Chat < 7.10.13",
    "sourceHref": "",
    "cvss": {
        "score": 8.1,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
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        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
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        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Rocket.Chat",
    "version": ">= 8.5.0-rc.0, < 8.5.1",
    "vendor": "RocketChat",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
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    "ai_score": 0
}