Vulnerability · Published Jun 24, 2026 · Assigned by GitHub_M
CVE-2026-55762Rocket.Chat: Any Authenticated User Can Permanently Deregister Workspace from Rocket.Chat Cloud via Unprotected `/api/v1/fingerprint` Endpoint
High 8.1
In plain English
A high-severity missing authorization in Rocket.Chat from RocketChat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities).
Official description
Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, and 7.10.13, the POST /api/v1/fingerprint REST endpoint enforces authentication (authRequired: true) but performs no authorization check. Any authenticated user — including a standard user role account — can call this endpoint with {"setDeploymentAs": "new-workspace"} to permanently deregister the workspace from Rocket.Chat Cloud. This wipes all cloud credentials, removes the workspace license, breaks push notifications for all users, and requires manual re-registration to recover. This vulnerability is fixed in 8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, and 7.10.13.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| RocketChat | Rocket.Chat | >= 8.5.0-rc.0, < 8.5.1>= 8.4.0-rc.0, < 8.4.4>= 8.3.0-rc.0, < 8.3.6>= 8.2.0-rc.0, < 8.2.6>= 8.1.0-rc.0, < 8.1.6>= 7.11.0-rc.0, < 8.0.7< 7.10.13 |
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H