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CVE-2026-55762

HIGH
8.1
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-55762
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-06-17 14:34 UTC
Published
2026-06-24 21:08 UTC
Last updated
2026-06-24 21:08 UTC
Primary CWE
CWE-862
CWE-862: Missing Authorization
Vendor / Product
RocketChat / Rocket.Chat
Sources
cve.org  ·  NVD

Severity & Metrics

8.1 HIGH CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Affected products (1)
VendorProductPlatformVersions
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 …
Weakness (CWE)
CWESourceDescription
CWE-862 cna CWE-862: Missing Authorization
CVSS scores (1)
ScoreSeverityVersionSourceVector
8.1 HIGH 3.1 cna CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
References (1)
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