---
id: CVE-2026-104962
title: Plane is an open-source project management tool
summary: >-
  Plane is an open-source project management tool. Prior to 1.4.0, GET
  /api/v1/workspaces/{slug}/projects/{project_id}/members/ returns the complete
  project-member roster, including each member's email address, first and last
  name, display…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-862
vendor: makeplane
product: plane
affected:
  - plane < 1.4.0
published: '2026-10-05'
updated: '2026-10-05'
sourceUpdated: '2026-10-05T17:17:11.733'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-104962'
references:
  - url: >-
      https://github.com/makeplane/plane/commit/5842ca8bf2b984b81c45bf58148a39b348a8995e
    label: security-advisories@github.com
  - url: 'https://github.com/makeplane/plane/pull/9375'
    label: security-advisories@github.com
  - url: 'https://github.com/makeplane/plane/releases/tag/v1.4.0'
    label: security-advisories@github.com
  - url: 'https://github.com/makeplane/plane/security/advisories/GHSA-w2vf-m9x9-mvmc'
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-05T17:27:45.050Z'
---

## Overview

Plane is an open-source project management tool. Prior to 1.4.0, GET /api/v1/workspaces/{slug}/projects/{project_id}/members/ returns the complete project-member roster, including each member's email address, first and last name, display name, avatar, and role. ProjectMemberPermission gates the endpoint, but its SAFE_METHODS branch checks only whether the caller is an active ProjectMember of any project in the workspace and does not bind the check to view.project_id. The view then filters solely by the project_id supplied in the URL. Consequently, any authenticated user who belongs to one project in a workspace, including a Guest, can read the roster of another private project in the same workspace. This issue is fixed in 1.4.0.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.