CVE-2026-46424 Budibase: Missing Cache Invalidation on Public API Role Unassignment Allows Revoked Users to Retain Privileges for Up to 1 Hour
Revoked users retain admin or builder privileges for up to one hour due to missing cache invalidation in the public API role unassignment endpoint.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-46424?
CVE-2026-46424 is a medium-severity missing authorization vulnerability in budibase, published on 27 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
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user identity and permissions from this cache (TTL: 3600 seconds), a user whose admin, builder, or app-level roles have been revoked via the public API retains those privileges for up to 1 hour.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.
Weakness: CWE-269
Which versions are affected by CVE-2026-46424?
2 open source packages ship an affected version, including @budibase/backend-core.
| Package | Affected | Fixed in |
|---|---|---|
@budibase/backend-core npm | All versions | 3.38.2 |
@budibase/backend-core npm | All versions | 3.38.2 |
How do I fix CVE-2026-46424?
Upgrade @budibase/backend-core to 3.38.2 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-46424 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-46424 exists.
Sources
Also known as GHSA-6vp2-6r7m-2jvx.