Budibase: Chat Identity Link Hijacking via Missing Consent & CSRF — Account Impersonation in Budibase_CVE-2026-50132

{
    "lastseen": "",
    "description": "Budibase is an open-source low-code platform. Prior to 3.39.0, `GET /api/chat-links/:instance/:token/handoff` is a public endpoint (no auth required) that performs a permanent, state-changing operation: it binds an external chat identity (Slack/Discord/MS Teams) to an authenticated Budibase user account, with no consent UI and no CSRF protection. The session token in the URL is created by the attacker (from their own /link slash command) and embeds the attacker's externalUserId. When an authenticated Budibase victim visits the URL, their account is silently and permanently linked to the attacker's Slack/Discord identity. The server responds with \"Authentication succeeded.\" \u2014 no indication of what was linked. This vulnerability is fixed in 3.39.0.",
    "published": "2026-06-26T20:34:30.304Z",
    "modified": "2026-06-26T20:34:30.304Z",
    "type": "cve",
    "title": "Budibase: Chat Identity Link Hijacking via Missing Consent & CSRF \u2014 Account Impersonation in Budibase",
    "source": "GitHub_M",
    "references": "https://github.com/Budibase/budibase/security/advisories/GHSA-v7j5-vc4m-723w",
    "id": "CVE-2026-50132",
    "bulletinFamily": "",
    "cwe": [
        "CWE-284",
        "CWE-352"
    ],
    "cvelist": null,
    "sourceData": "Budibase budibase < 3.39.0",
    "sourceHref": "",
    "cvss": {
        "score": 7.3,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
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        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
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            "baseScore": 0,
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "budibase",
    "version": "< 3.39.0",
    "vendor": "Budibase",
    "ai_description": "",
    "ai_severity": "",
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    "ai_score": 0
}