CVE-2026-15342 | Plane contains a multi‑tenant authorization flaw in its asse…

Description

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

Metadata

CVE ID: CVE-2026-15342
State: PUBLISHED
Assigner: certcc
Reserved: 2026-07-09 20:03 UTC
Published: 2026-07-21 16:42 UTC
Last updated: 2026-07-21 17:30 UTC
Vendor / Product: Plane / Plane
Sources: cve.org · NVD

Severity & Metrics

No CVSS data available.

Affected products (1)

Vendor	Product	Platform	Versions
Plane	Plane	—	0 ≤ 1.3.0

Weakness (CWE)

CWE	Source	Description
—	cna	CWE-552 Files or Directories Accessible to External Parties
—	cna	CWE-639 Authorization Bypass Through User-Controlled Key

References (2)