Makeplane Plane up to 1.3.x Asset Retrieval Endpoints access control

Summaryinfo

A vulnerability marked as problematic has been reported in Makeplane Plane up to 1.3.x. The affected element is the function WorkspaceFileAssetEndpoint.get/WorkspaceAssetDownloadEndpoint.get/EntityAssetEndpoint.get of the component Asset Retrieval Endpoints. This manipulation causes access control. This vulnerability appears as CVE-2026-105631. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Makeplane Plane up to 1.3.x. It has been declared as problematic. Affected by this vulnerability is the function WorkspaceFileAssetEndpoint.get/WorkspaceAssetDownloadEndpoint.get/EntityAssetEndpoint.get of the component Asset Retrieval Endpoints. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality. The summary by CVE is:

Plane is an open-source project management tool. Prior to 1.4.0, WorkspaceFileAssetEndpoint.get and WorkspaceAssetDownloadEndpoint.get resolve FileAsset records within a workspace without checking membership in the asset's project, allowing a workspace member to download assets from private projects when the asset UUID is known. EntityAssetEndpoint.get is a separate public-anchor endpoint that grants AllowAny access and scopes the lookup only to the anchor's workspace rather than its published entity or project. An unauthenticated caller who knows a valid anchor and an asset UUID can therefore retrieve issue-description or comment-description assets belonging to unpublished or private projects in that workspace. This issue is fixed in 1.4.0.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-105631 since 10/05/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

Upgrading to version 1.4.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-92544). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• Makeplane

Name

• Plane

Version

• 1.0
• 1.1
• 1.2
• 1.3

Website

• Product: https://github.com/makeplane/plane/

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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