Plane is Vulnerable to Unauthenticated Workspace Member Information Disclosure
Executive Summary
A security vulnerability exists in the Plane project management platform that allows unauthenticated attackers to enumerate workspace members and extract sensitive information including email addresses, user roles, and internal identifiers. The vulnerability stems from Django REST Framework permission classes being incorrectly configured to allow anonymous access to protected endpoints.
This vulnerability enables attackers to:
- Enumerate all members of any workspace without authentication
- Extract user email addresses and personally identifiable information (PII)
- Identify administrative accounts for targeted attacks
- Map organizational structure and user roles
- Conduct reconnaissance for social engineering attacks
Affected Endpoints:
GET /api/public/workspaces/{workspace_slug}/members/
GET /api/public/workspaces/{workspace_slug}/projects/{project_id}/members/A fix is available at https://github.com/makeplane/plane/releases/tag/v1.2.3.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | plane | all versions | no fix |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N- Weakness (CWE)
CWE-200, CWE-284- Platform
- Python (PyPI)
- Package
plane- Disclosed
- 05.03.2026
- Updated
- 11.10.2026 12:19
Sources and licenses
OSV / GitHub Advisory Database - GHSA-87x4-j8vh-p5qf - CC BY 4.0
Vulnerability history: plane
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 03.2026 03.2026
- Without a fix
- 1
- Exploited in attacks
- 0
Severity breakdown
- High 2
Disclosures per year
- 2026: 2
-
Plane is Vulnerable to Unauthenticated Workspace Member Information Disclosure this entry
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