CVE-2026-73305

HIGH 8.8

Budibase: Privilege escalation via public role assignment API missing app-level authorization

CVSS Score

8.8

EPSS Score

0.0%

EPSS Percentile

0th

Budibase is an open-source low-code platform. Prior to 3.39.24, POST /api/public/v1/roles/assign called validateGlobalRoleUpdate without checking appBuilder.appId or role.appId in packages/server/src/api/controllers/public/globalRoleValidation.ts. An app-scoped builder could scope the request to an app they control and then grant themselves builder access or an arbitrary role in another app, exposing that app data, datasource configuration, and automations. This issue is fixed in version 3.39.24.

CWE	CWE-269 CWE-862 CWE-863
Vendor	budibase
Product	budibase
Published	Aug 13, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

Budibase / budibase

< 3.39.24

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/Budibase/budibase/security/advisories/GHSA-j9fc-w3mr-x6mv github.com: https://github.com/Budibase/budibase/pull/19098 github.com: https://github.com/Budibase/budibase/commit/453391d3245dd04cc386ccd6959d38ccf30db9a8 github.com: https://github.com/Budibase/budibase/releases/tag/3.39.24