CVE-2026-15342 CVE-2026-15342
Authenticated users can access, delete, or duplicate assets from other workspaces due to missing authorization checks in the asset-management API.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-15342?
CVE-2026-15342 is a medium-severity missing authorization vulnerability in Plane, published on 21 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-15342?
How do I fix CVE-2026-15342?
No fix has been published for CVE-2026-15342 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-15342 being exploited?
There is no known exploitation of CVE-2026-15342 in the wild and no public exploit code.
Sources
Also known as GHSA-xgr8-mrxv-f3p6.