CVE-2026-48150

Critical

Published: 27 May 2026

Published

27 May 2026

Modified

27 May 2026

KEV Added

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Patch

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CVSS Score v3.1 9.0 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:L

EPSS Score 0.0029 21.0th percentile

Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2026-48150 is a critical-severity Improperly Controlled Modification of Dynamically-Determined Object Attributes (CWE-915) vulnerability. Its CVSS base score is 9.0 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 21.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2026-32590

Vulnerability details

Budibase is an open-source low-code platform. Prior to 3.39.0, /api/public/v1/roles/assign is guarded by the builderOrAdmin middleware, which passes any user who is a builder for the app id in the x-budibase-app-id header. That check admits both global builders and workspace-scoped…

builders (builder.apps set but builder.global unset). The controller then spreads the request body into the SDK call, and the SDK grants builder.global=true or admin.global=true on whichever user ids the caller supplies. Bob, a workspace-scoped builder with an API key, promotes himself or any other user to global admin with one POST. The whole flow is tenant-wide privilege escalation from an app-level role, available to anyone with an Enterprise license that unlocks the EXPANDED_PUBLIC_API feature. This vulnerability is fixed in 3.39.0.

CWE(s): CWE-915

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1068 Exploitation for Privilege Escalation Privilege Escalation

Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.

attack.mitre.org →

T1098 Account Manipulation Persistence

Adversaries may manipulate accounts to maintain and/or elevate access to victim systems.

attack.mitre.org →

Why these techniques?

Direct privilege escalation via mass-assignment on public API endpoint allowing workspace builder to grant global admin roles (T1068 Exploitation for Privilege Escalation + T1098 Account Manipulation).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0