What is CVE-2026-72918?

CVE-2026-72918 is a medium-severity vulnerability in Rocketchat Rocket.chat, classified under Missing Authorization. CVSS score: 5.4/10. Published 2026-08-10.

How severe is CVE-2026-72918?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Auth bypass in Rocketchat Rocket.chat

CVE-2026-72918

Rocket.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…

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Rocketchat Rocket.chat — versions < 7.10.14, >= 8.0.0, < 8.0.8, >= 8.1.0, < 8.1.7

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

https://github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-27jx-236m-3f5j (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-72918?: CVE-2026-72918 is a medium-severity vulnerability in Rocketchat Rocket.chat, classified under Missing Authorization. CVSS score: 5.4/10. Published 2026-08-10.
How severe is CVE-2026-72918?: Medium severity. CVSS v3 base score is 5.4 out of 10.