CVE-2026-104894

Plane is an open-source project management tool. Prior to 1.4.0, the modules endpoint accepts issue UUIDs in the URL path without validating that they belong to the caller's workspace. An authenticated user can link issues from any workspace to modules in their own workspace. This issue is fixed ...

CVE-2026-104955

Plane is an open-source project management tool. Prior to 1.4.0, a Project Member with role 15 can send a PATCH request to the project-member update endpoint at /api/workspaces/workspaceslug/projects/projectid/members/memberpk/ to change another user's project role. The role-update logic blocks...

CVE-2026-104971

The open-source project management tool Plane contains multiple authorization vulnerabilities affecting versions prior to 1.4.0 . The DuplicateAssetEndpoint fails to restrict FileAsset fetching to the caller's workspace, enabling cross-workspace asset duplication . Additionally, WorkspaceFileAsse...

CVE-2026-104971 Plane: Cross-Workspace Asset Duplication IDOR + WorkspaceFileAssetEndpoint and FileAssetEndpoint Missing Authorization

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,...

CVE-2026-104971 Plane: Cross-Workspace Asset Duplication IDOR + WorkspaceFileAssetEndpoint and FileAssetEndpoint Missing Authorization

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,...

EUVD-2026-92520

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,...

CVE-2026-104971 Plane: Cross-Workspace Asset Duplication IDOR + WorkspaceFileAssetEndpoint and FileAssetEndpoint Missing Authorization

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,...

CVE-2026-104970 Plane: InstanceAdminSignUpEndpoint TOCTOU race allows two concurrent unauthenticated callers to both bootstrap as Plane instance admins

Plane is an open-source project management tool. From 0.13 until 1.4.0, InstanceAdminSignUpEndpoint in apps/api/plane/license/api/views/admin.py:89-117, 173-229 uses InstanceAdmin.objects.first for the first-admin check and performs account creation without an atomic transaction, row lock,...

CVE-2026-104970

The Plane project management tool (versions 0.13 through 1.4.0) contains a Time-of-Check to Time-of-Use (TOCTOU) race condition within the InstanceAdminSignUpEndpoint located in apps/api/plane/license/api/views/admin.py. The vulnerability arises because the system performs a first-admin check usi...

EUVD-2026-92492

Plane is an open-source project management tool. From 0.13 until 1.4.0, InstanceAdminSignUpEndpoint in apps/api/plane/license/api/views/admin.py:89-117, 173-229 uses InstanceAdmin.objects.first for the first-admin check and performs account creation without an atomic transaction, row lock,...

CVE-2026-104970 Plane: InstanceAdminSignUpEndpoint TOCTOU race allows two concurrent unauthenticated callers to both bootstrap as Plane instance admins

Plane is an open-source project management tool. From 0.13 until 1.4.0, InstanceAdminSignUpEndpoint in apps/api/plane/license/api/views/admin.py:89-117, 173-229 uses InstanceAdmin.objects.first for the first-admin check and performs account creation without an atomic transaction, row lock,...

CVE-2026-104970 Plane: InstanceAdminSignUpEndpoint TOCTOU race allows two concurrent unauthenticated callers to both bootstrap as Plane instance admins

Plane is an open-source project management tool. From 0.13 until 1.4.0, InstanceAdminSignUpEndpoint in apps/api/plane/license/api/views/admin.py:89-117, 173-229 uses InstanceAdmin.objects.first for the first-admin check and performs account creation without an atomic transaction, row lock,...

CVE-2026-104969 Plane: Cross-Tenant Cycle Issue Hijack via IDOR

Plane is an open-source project management tool. Prior to 1.4.0, the cycle-issues endpoint accepts issue UUIDs in the request body without validating that they belong to the caller's workspace. An authenticated user can add issues from any workspace to a cycle they control. If a victim issue is...

CVE-2026-104969

The open-source project management tool Plane is vulnerable to a cross-tenant cycle issue via IDOR in versions prior to 1.4.0 . The cycle-issues endpoint fails to validate that provided issue UUIDs belong to the caller's workspace, allowing an authenticated user to move issues from any workspace ...

EUVD-2026-92491

Plane is an open-source project management tool. Prior to 1.4.0, the cycle-issues endpoint accepts issue UUIDs in the request body without validating that they belong to the caller's workspace. An authenticated user can add issues from any workspace to a cycle they control. If a victim issue is...

CVE-2026-104969 Plane: Cross-Tenant Cycle Issue Hijack via IDOR

Plane is an open-source project management tool. Prior to 1.4.0, the cycle-issues endpoint accepts issue UUIDs in the request body without validating that they belong to the caller's workspace. An authenticated user can add issues from any workspace to a cycle they control. If a victim issue is...

CVE-2026-104969 Plane: Cross-Tenant Cycle Issue Hijack via IDOR

Plane is an open-source project management tool. Prior to 1.4.0, the cycle-issues endpoint accepts issue UUIDs in the request body without validating that they belong to the caller's workspace. An authenticated user can add issues from any workspace to a cycle they control. If a victim issue is...

CVE-2026-104968 Plane: Cross-workspace member enumeration via /api/workspaces/{slug}/entity-search/

Plane is an open-source project management tool. Prior to 1.4.0, GET /api/workspaces/slug/entity-search/?querytype=usermention 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...

CVE-2026-104968 Plane: Cross-workspace member enumeration via /api/workspaces/{slug}/entity-search/

Plane is an open-source project management tool. Prior to 1.4.0, GET /api/workspaces/slug/entity-search/?querytype=usermention 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...

EUVD-2026-92490

Plane is an open-source project management tool. Prior to 1.4.0, GET /api/workspaces/slug/entity-search/?querytype=usermention 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...