{"id":"CVE-2026-50132","aliases":["GHSA-v7j5-vc4m-723w"],"url":"https://o3.security/vulnerability/CVE-2026-50132","summary":"Budibase: Chat Identity Link Hijacking via Missing Consent & CSRF — Account Impersonation in Budibase","details":"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.\" — no indication of what was linked. This vulnerability is fixed in 3.39.0.","published":"2026-06-26T20:34:30.304Z","modified":"2026-08-07T11:49:55.799382003Z","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"},"epss":{"score":0.00151,"percentile":0.04733,"asOf":"2026-08-11"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"@budibase/server","fixedVersion":"3.39.0"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/Budibase/budibase/security/advisories/GHSA-v7j5-vc4m-723w"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50132.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50132"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:49:55.799382003Z"}}