Rocket.Chat: Insecure implementation of websocket notifications

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-72918
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-10 22:17:10 UTC
Updated2026-08-10 22:17:10 UTC
DescriptionRocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 7.10.14, 8.0.8, 8.1.7, 8.2.7, 8.3.7, 8.4.5, 8.5.2, and 8.6.1, the stream-notify-user stream in the WebSocket protocol allows an authenticated user to write arbitrary notification bodies because the sender is not checked, and the client-side UI can create an ephemeral fake message in another user's currently open chat. This issue is fixed in versions 7.10.14, 8.0.8, 8.1.7, 8.2.7, 8.3.7, 8.4.5, 8.5.2, and 8.6.1.

Risk And Classification

Primary CVSS: v3.1 5.4 MEDIUM from [email protected]

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

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

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.1CNADECLARED5.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA RocketChat Rocket.Chat affected < 7.10.14 Not specified
CNA RocketChat Rocket.Chat affected >= 8.0.0, < 8.0.8 Not specified
CNA RocketChat Rocket.Chat affected >= 8.1.0, < 8.1.7 Not specified
CNA RocketChat Rocket.Chat affected >= 8.2.0, < 8.2.7 Not specified
CNA RocketChat Rocket.Chat affected >= 8.3.0, < 8.3.7 Not specified
CNA RocketChat Rocket.Chat affected >= 8.4.0, < 8.4.5 Not specified
CNA RocketChat Rocket.Chat affected >= 8.5.0, < 8.5.2 Not specified
CNA RocketChat Rocket.Chat affected >= 8.6.0, < 8.6.1 Not specified

References

ReferenceSourceLinkTags
github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-27jx-236m-3f5j [email protected] github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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