Auth bypass in Makeplane Plane
CVE-2026-105631
Plane is an open-source project management tool. Prior to 1.4.0, WorkspaceFileAssetEndpoint.get and WorkspaceAssetDownloadEndpoint.get resolve FileAsset records within a workspace without checking membership in the asset's project, allowing a workspace member to download assets from private projects when the asset UUID is known. EntityAssetEndpoint.get is a separate public-anchor endpoint that grants AllowAny access and scopes the lookup only to the anchor's workspace rather than its published entity or project. An unauthenticated caller who knows a valid anchor and an asset UUID can therefore retrieve issue-description or comment-description assets belonging to unpublished or private projects in that workspace. This issue is fixed in 1.4.0.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Makeplane Plane — versions < 1.4.0
Weakness classification (CWE)
References
- github.com/makeplane/plane/security/advisories/GHSA-85h2-mhcc-xfmw
- github.com/makeplane/plane/pull/9288
- github.com/makeplane/plane/pull/9372
- github.com/makeplane/plane/commit/4577dc3f7a6b5a198602b602a45c6b0abdc7204b
- github.com/makeplane/plane/commit/e63f0c3b3404d669ae05dd9050aab72292f87e5c
- github.com/makeplane/plane/releases/tag/v1.4.0
Frequently asked questions
- What is CVE-2026-105631?
- CVE-2026-105631 is a high-severity vulnerability in Makeplane Plane, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.5/10. Published 2026-10-05.
- How severe is CVE-2026-105631?
- High severity. CVSS v3 base score is 7.5 out of 10.