Vulnerability · Published May 27, 2026 · Assigned by GitHub_M
CVE-2026-46424Budibase: Missing Cache Invalidation on Public API Role Unassignment Allows Revoked Users to Retain Privileges for Up to 1 Hour
Medium 4.2
In plain English
A medium-severity privilege mismanagement in budibase from Budibase. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Budibase is an open-source low-code platform. Prior to 3.38.2, the public API role unassignment endpoint (POST /api/public/v1/roles/unassign) updates user documents in CouchDB but does not invalidate the corresponding Redis user cache entries. Because the authentication middleware resolves user identity and permissions from this cache (TTL: 3600 seconds), a user whose admin, builder, or app-level roles have been revoked via the public API retains those privileges for up to 1 hour. This vulnerability is fixed in 3.38.2.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | @budibase/backend-core | 3.38.2 | GHSA-6vp2-6r7m-2jvx |
Affected products (as reported)
Weakness: CWE-269 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
References
- https://github.com/Budibase/budibase/security/advisories/GHSA-6vp2-6r7m-2jvx x_refsource_CONFIRM
- https://github.com/Budibase/budibase/releases/tag/3.38.2 x_refsource_MISC