CVE-2026-15342

Name of the Vulnerable Software and Affected Versions Plane versions prior to 1.3.1

Description Plane contains a multi-tenant authorization flaw in its asset-management API. This issue allows authenticated users from one workspace to access, delete, or duplicate assets belonging to another workspace by providing the victim workspace slug and asset ID. The affected endpoints return presigned file URLs and enable destructive or duplicative actions without verifying if the requester is a member of the targeted workspace. This leads to cross-tenant data exposure, data deletion, and persistent exfiltration of files into an attacker-controlled workspace.

Recommendations Upgrade Plane to a version newer than 1.3.0.