CVE-2026-105631: CWE-639: Authorization Bypass Through User-Controlled Key in makeplane plane
Description
Plane, an open-source project management tool, has an authorization bypass vulnerability in versions prior to 1.4.0. The flaw allows workspace members or unauthenticated callers who know certain UUIDs to access private project assets without proper membership verification. This issue is resolved in version 1.4.0.
CVSS v3.1
Score 7.5high
Affected software
makeplane
plane
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-105631 describes an authorization bypass vulnerability in the Plane project management tool before version 1.4.0. The WorkspaceFileAssetEndpoint.get and WorkspaceAssetDownloadEndpoint.get methods fail to verify project membership when resolving FileAsset records, enabling workspace members to download assets from private projects if they know the asset UUID. Additionally, the EntityAssetEndpoint.get endpoint allows unauthenticated users who know a valid anchor and asset UUID to retrieve issue-description or comment-description assets from unpublished or private projects within that workspace. This vulnerability is fixed in Plane version 1.4.0.
Potential Impact
An attacker with knowledge of valid asset UUIDs can access confidential assets from private or unpublished projects without proper authorization. This leads to high confidentiality impact as sensitive project data can be exposed. Integrity impact is low since the vulnerability allows read-only access. Availability is not affected.
Mitigation Recommendations
Upgrade Plane to version 1.4.0 or later, where this authorization bypass vulnerability is fixed. No other mitigations are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-10-05T16:40:39.611Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ac3e69c2cdf04f65628b475
Added to database: 10/05/2026, 18:04:12 UTC
Last enriched: 10/05/2026, 18:19:23 UTC
Last updated: 10/05/2026, 18:56:34 UTC
Views: 9
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