{"apiVersion":"1.0","identifier":"CVE-2026-72856","description":"Budibase versions before 3.40.0 contain an authorization/authentication bypass in the PUT /api/global/users/tenant/owner (changeTenantOwnerEmail) endpoint. On self-hosted instances (SELF_HOSTED or DISABLE_ACCOUNT_PORTAL set), the cloudRestricted middleware is a no-op and the route is protected only by a general authentication check, so any authenticated user — including a lowest-privilege BASIC app user — can reassign the tenant account-holder (top-privilege admin) email to an attacker-controlled address. The attacker can then use the public password-reset flow to take over the admin account, leading to full administrative access.","publishedAt":"2026-08-13T22:17:24","lastModifiedAt":"2026-08-17T16:17:45","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72856","cvssScore":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","epssProbability":0.00327,"riskScore":0.83,"affectedProduct":"Budibase","affectedVersions":"<3.40.0","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-72856","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-72856","en":"https://www.redsauce.net/en/cves/CVE-2026-72856","fr":"https://www.redsauce.net/fr/cves/CVE-2026-72856","pt":"https://www.redsauce.net/pt/cves/CVE-2026-72856","de":"https://www.redsauce.net/de/cves/CVE-2026-72856","sk":"https://www.redsauce.net/sk/cves/CVE-2026-72856","el":"https://www.redsauce.net/el/cves/CVE-2026-72856"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-72856"}}