In plane.io, a Guest User to a Workspace can still be able to see list of members
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-284.
Summary
Plane is an an open-source project management tool. In plane.io, a guest user doesn't have a permission to access https[:]//app[.]plane[.]so/[:]slug/settings. Prior to Plane version 1.2.0, a problem occurs when the `/api/workspaces/:slug/members/` is accessible by guest and able to list of users on a specific workspace that they joined. Since the `display_name` in the response is actually the handler of the email, a malicious guest can still identify admin users' email addresses. Version 1.2.0 fixes this issue.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA plane (makeplane) Fixed in 1.2.0
Timeline
- 2026-10-02 Threatist record created from CVE-2025-69284
References
More makeplane Plane vulnerabilities
- TI-2024-32097 Plane allows server side request forgery via /_next/image endpoint CVSS 3.1CRITICAL 9.3
- TI-2026-34237 Authorization bypass in makeplane plane CVSS 3.1HIGH 8.3
- TI-2023-02127 Plane v0.7.1 - Unauthorized access to files CVSS 3.1HIGH 7.5
- TI-2026-28725 Plane has a Server-Side Request Forgery (SSRF) in Favicon Fetching CVSS 3.1HIGH 7.7
- TI-2026-28361 Plane IDOR: Cross-Project Issue Date Modification via Bulk Update Endpoint CVSS 3.1HIGH 7.7
- TI-2023-14603 Plane 0.7.1 - Insecure file upload CVSS 3.1HIGH 7.1
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences