CVE-2026-104968 Plane: Cross-workspace member enumeration via /api/workspaces/{slug}/entity-search/
Authenticated users can enumerate workspace members and project details without membership, exposing sensitive user data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-104968?
CVE-2026-104968 is a high-severity missing authorization vulnerability in makeplane plane, published on 5 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Plane is an open-source project management tool. Prior to 1.4.0, GET /api/workspaces/{slug}/entity-search/?query_type=user_mention returns workspace-member display names, UUIDs, and avatar URLs to any authenticated user who knows the workspace slug, even when the caller is not a workspace member. The endpoint also exposes ProjectMember rows under the same condition. SearchEndpoint in apps/api/plane/app/views/search/base.py inherits BaseAPIView with only permission_classes = [IsAuthenticated] and performs no workspace-membership check. This issue is fixed in 1.4.0.
Weakness: CWE-862
Which versions are affected by CVE-2026-104968?
How do I fix CVE-2026-104968?
No fix has been published for CVE-2026-104968 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-104968 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-104968 exists.
Sources
Also known as GHSA-32q3-mqpc-3mhv.