Auth bypass in Makeplane Plane
CVE-2026-27705
Plane is an an open-source project management tool. Prior to version 1.2.2, the `ProjectAssetEndpoint.patch()` method in `apps/api/plane/app/views/asset/v2.py` (lines 579–593) performs a global asset lookup using only the asset ID (`pk`) via `FileAsset.objects.get(id=pk)`, without verifying that the asset belongs to the workspace and project specified in the URL path. This allows any authenticated user (including those with the GUEST role) to modify the `attributes` and `is_uploaded` status of assets belonging to any workspace or project in the entire Plane instance by guessing or enumerating asset UUIDs. Version 1.2.2 fixes the issue.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (30.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 30.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.002
Affected products
- Makeplane Plane — versions < 1.2.2
- Plane
Weakness classification (CWE)
References
- github.com/makeplane/plane/security/advisories/GHSA-rfj3-8c85-g46j (Vendor Advisory)
- github.com/makeplane/plane/commit/9070acbbe81bc02db5c169789da6862d5fc35d96 (Patch)
- github.com/makeplane/plane/releases/tag/v1.2.2 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-27705?
- CVE-2026-27705 is a medium-severity vulnerability in Makeplane Plane, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 6.5/10. Published 2026-02-25.
- How severe is CVE-2026-27705?
- Medium severity. CVSS v3 base score is 6.5 out of 10.