Description
Plane is an open-source project management tool. Prior to 1.4.0, DuplicateAssetEndpoint fetches a source FileAsset without limiting it to the caller's workspace, allowing cross-workspace asset duplication. WorkspaceFileAssetEndpoint and the legacy FileAssetEndpoint omit workspace authorization, allowing authenticated users to read, create, modify, or delete assets in workspaces where they are not members. Separately, WorkspaceViewViewSet.retrieve lacks the authorization decorator used by its sibling actions, exposing an unauthorized workspace-view read surface. This issue is fixed in 1.4.0.
References7
- github.com/makeplane/plane/commit/4577dc3f7a6b5a198602b602a45c6…
- github.com/makeplane/plane/commit/ac11c3ef7939e31201fa92a17de10…
- github.com/makeplane/plane/pull/8885
- github.com/makeplane/plane/pull/9288
- github.com/makeplane/plane/releases/tag/v1.4.0
- github.com/makeplane/plane/security/advisories/GHSA-p57q-8hh8-7…
- github.com/makeplane/plane/security/advisories/GHSA-p57q-8hh8-7…
Metrics
- CVSS 3.1
-
8.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N - EPSS — exploit probability
- 0% percentile: 29 · as of 10 November 2026
- CWE
- CWE-639CWE-862
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.