Plane is Vulnerable to Unauthenticated Workspace Member Information DisclosureGHSA-87x4-j8vh-p5qf
HIGHGHSA-87x4-j8vh-p5qf is a high-severity (CVSS 7.5) Information Exposure vulnerability in plane. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.
Exploitation Status
No confirmed exploitation observed yet
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for GHSA-87x4-j8vh-p5qf.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
planeReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
Description
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 Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | plane | all versions | No fix |
Affected Products
planeplaneDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for plane, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Remediation status
The records we use list no patched version of plane for GHSA-87x4-j8vh-p5qf. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.
Mitigate without a patch
Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.
Frequently Asked Questions
Is GHSA-87x4-j8vh-p5qf in your dependencies?
Find it across PyPI, including transitive dependencies.