CVE-2026-46424: Budibase: Missing Cache Invalidation on Public API Role Unassignment Allows Revoked Users to Retain Privileges for Up to 1 Hour

May 19, 2026 (updated June 8, 2026)

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user identity and permissions from this cache (TTL: 3600 seconds), a user whose admin, builder, or app-level roles have been revoked via the public API retains those privileges for up to 1 hour.

References

github.com/Budibase/budibase/releases/tag/3.38.2
github.com/Budibase/budibase/security/advisories/GHSA-6vp2-6r7m-2jvx
github.com/advisories/GHSA-6vp2-6r7m-2jvx
nvd.nist.gov/vuln/detail/CVE-2026-46424

Code Behaviors & Features

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