Description
Plane is an open-source project management tool. Prior to 1.4.0, GET /api/workspaces/{slug}/cycles/ through WorkspaceCyclesEndpoint and GET /api/workspaces/{slug}/modules/ through WorkspaceModulesEndpoint return records from every project in a workspace without checking whether the requester belongs to each project. Any authenticated workspace member, including a Guest with access to only one project, can enumerate names, descriptions, sprint dates, issue counts, progress snapshots, external integration IDs, linked URLs, and member lists for cycles and modules in private projects. The sibling WorkspaceLabelsEndpoint and WorkspaceStatesEndpoint apply the correct project__project_projectmember__member=request.user filter, making the cycle and module endpoints inconsistent outliers. This issue is fixed in 1.4.0.
Published: 2026-10-05
Score: 4.3 Medium
EPSS: n/a
KEV: No
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Remediation

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History

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, GET /api/workspaces/{slug}/cycles/ through WorkspaceCyclesEndpoint and GET /api/workspaces/{slug}/modules/ through WorkspaceModulesEndpoint return records from every project in a workspace without checking whether the requester belongs to each project. Any authenticated workspace member, including a Guest with access to only one project, can enumerate names, descriptions, sprint dates, issue counts, progress snapshots, external integration IDs, linked URLs, and member lists for cycles and modules in private projects. The sibling WorkspaceLabelsEndpoint and WorkspaceStatesEndpoint apply the correct project__project_projectmember__member=request.user filter, making the cycle and module endpoints inconsistent outliers. This issue is fixed in 1.4.0.
Title Plane: Workspace cycle and module endpoints missing project-membership filter expose private project metadata to any workspace member
Weaknesses CWE-200
CWE-863
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}


Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-05T16:51:25.444Z

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

Link: CVE-2026-104963

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-05T17:17:11.770

Modified: 2026-10-05T17:17:11.910

Link: CVE-2026-104963

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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Weaknesses
  • CWE-200

    Exposure of Sensitive Information to an Unauthorized Actor

  • CWE-863

    Incorrect Authorization