Nhost Leaks the Refresh Token via URL Query Parameter in OAuth Provider Callback_CVE-2026-34969

{
    "lastseen": "",
    "description": "Nhost is an open source Firebase alternative with GraphQL. Prior to 0.48.0, the auth service's OAuth provider callback flow places the refresh token directly into the redirect URL as a query parameter. Refresh tokens in URLs are logged in browser history, server access logs, HTTP Referer headers, and proxy/CDN logs. Note that the refresh token is one-time use and all of these leak vectors are on owned infrastructure or services integrated by the application developer. This vulnerability is fixed in 0.48.0.",
    "published": "2026-04-06T16:01:10.174Z",
    "modified": "2026-04-07T16:00:25.296Z",
    "type": "cve",
    "title": "Nhost Leaks the Refresh Token via URL Query Parameter in OAuth Provider Callback",
    "source": "GitHub_M",
    "references": "https://github.com/nhost/nhost/security/advisories/GHSA-g2qj-prgh-4g9r",
    "id": "CVE-2026-34969",
    "bulletinFamily": "",
    "cwe": [
        "CWE-200",
        "CWE-598"
    ],
    "cvelist": null,
    "sourceData": "nhost nhost < 0.48.0",
    "sourceHref": "",
    "cvss": {
        "score": 2.3,
        "severity": "LOW",
        "vector": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
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        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "nhost",
    "version": "< 0.48.0",
    "vendor": "nhost",
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    "ai_score": 0
}