Plane is an open-source project management tool. Prior to 1.4.0, Plane's project update endpoint authorizes the caller against the workspace slug in the request URL but loads the target project globally by UUID without binding it to that workspace. An administrator of one workspace can modify a project in another workspace when the victim project UUID is known. This violates tenant isolation and permits unauthorized cross-workspace changes to project metadata and configuration. This issue is fixed in 1.4.0.

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History

Mon, 05 Oct 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 05 Oct 2026 19:00:00 +0000

Type Values Removed Values Added
First Time appeared Makeplane
Makeplane plane
Vendors & Products Makeplane
Makeplane plane

Mon, 05 Oct 2026 17:00:00 +0000

Type Values Removed Values Added
Description Plane is an open-source project management tool. Prior to 1.4.0, Plane's project update endpoint authorizes the caller against the workspace slug in the request URL but loads the target project globally by UUID without binding it to that workspace. An administrator of one workspace can modify a project in another workspace when the victim project UUID is known. This violates tenant isolation and permits unauthorized cross-workspace changes to project metadata and configuration. This issue is fixed in 1.4.0.
Title Plane: Cross-Workspace Project Modification via Unscoped Project Lookup
Weaknesses CWE-639
References
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-05T19:55:39.051Z

Reserved: 2026-10-02T18:16:13.629Z

Link: CVE-2026-104964

cve-icon Vulnrichment

Updated: 2026-10-05T19:55:19.316Z

cve-icon NVD

Status : Deferred

Published: 2026-10-05T17:17:11.943

Modified: 2026-10-05T20:17:09.833

Link: CVE-2026-104964

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-05T18:45:19Z

Weaknesses