Rocket.Chat: Any Authenticated User Can Permanently Deregister Workspace from Rocket.Chat Cloud via Unprotected `/api/v1/fingerprint` Endpoint

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Summary

CVECVE-2026-55762
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-24 22:16:49 UTC
Updated2026-06-24 22:16:49 UTC
DescriptionRocket.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.

Risk And Classification

Primary CVSS: v3.1 8.1 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Problem Types: CWE-862 | CWE-862 CWE-862: Missing Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
3.1CNADECLARED8.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA RocketChat Rocket.Chat affected >= 8.5.0-rc.0, < 8.5.1 Not specified
CNA RocketChat Rocket.Chat affected >= 8.4.0-rc.0, < 8.4.4 Not specified
CNA RocketChat Rocket.Chat affected >= 8.3.0-rc.0, < 8.3.6 Not specified
CNA RocketChat Rocket.Chat affected >= 8.2.0-rc.0, < 8.2.6 Not specified
CNA RocketChat Rocket.Chat affected >= 8.1.0-rc.0, < 8.1.6 Not specified
CNA RocketChat Rocket.Chat affected >= 7.11.0-rc.0, < 8.0.7 Not specified
CNA RocketChat Rocket.Chat affected < 7.10.13 Not specified

References

ReferenceSourceLinkTags
github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-8hhc-j325-rxqp [email protected] github.com
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