CVE-2026-100686: Improper Privilege Management in budibase server
Budibase versions before 3.45.0 fail to validate per-app authorization in the POST /api/global/groups/:groupId/apps endpoint, allowing builders to assign application roles across workspace boundaries. A builder of a single workspace can exploit missing per-app authorization checks to grant themselves admin roles in other workspaces by modifying user group role mappings.
AI Analysis
Technical Summary
CVE-2026-100686 is an improper privilege management vulnerability affecting Budibase server versions before 3.45.0. The issue arises because the server fails to validate per-app authorization in the POST /api/global/groups/:groupId/apps endpoint. As a result, a builder with access to a single workspace can exploit this missing authorization check to grant themselves admin roles in other workspaces by altering user group role mappings. This vulnerability has a CVSS 4.0 base score of 8.6, indicating high severity.
Potential Impact
An attacker with builder privileges in one workspace can escalate their privileges to admin roles in other workspaces within the Budibase server environment. This cross-workspace privilege escalation can lead to unauthorized administrative control over applications and potentially sensitive data in other workspaces.
Mitigation Recommendations
Upgrade Budibase server to version 3.45.0 or later, where this improper privilege management vulnerability has been fixed. No other mitigation steps are indicated.
CVE-2026-100686: Improper Privilege Management in budibase server
Description
Budibase versions before 3.45.0 fail to validate per-app authorization in the POST /api/global/groups/:groupId/apps endpoint, allowing builders to assign application roles across workspace boundaries. A builder of a single workspace can exploit missing per-app authorization checks to grant themselves admin roles in other workspaces by modifying user group role mappings.
CVSS v4.0
Score 8.6high
Affected software
budibase
server
pkg:github/budibase/budibaseRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-100686 is an improper privilege management vulnerability affecting Budibase server versions before 3.45.0. The issue arises because the server fails to validate per-app authorization in the POST /api/global/groups/:groupId/apps endpoint. As a result, a builder with access to a single workspace can exploit this missing authorization check to grant themselves admin roles in other workspaces by altering user group role mappings. This vulnerability has a CVSS 4.0 base score of 8.6, indicating high severity.
Potential Impact
An attacker with builder privileges in one workspace can escalate their privileges to admin roles in other workspaces within the Budibase server environment. This cross-workspace privilege escalation can lead to unauthorized administrative control over applications and potentially sensitive data in other workspaces.
Mitigation Recommendations
Upgrade Budibase server to version 3.45.0 or later, where this improper privilege management vulnerability has been fixed. No other mitigation steps are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-26T02:37:41.037Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ab7c9abf7a7c5410652fd51
Added to database: 09/26/2026, 13:33:31 UTC
Last enriched: 09/26/2026, 13:47:59 UTC
Last updated: 09/27/2026, 01:57:11 UTC
Views: 12
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