What is CVE-2026-30831?

CVE-2026-30831 is a critical-severity vulnerability in Rocket.chat, classified under Improper Authentication. CVSS score: 9.8/10. Published 2026-03-06.

How severe is CVE-2026-30831?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Rocket.chat

CVE-2026-30831

Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to versions 7.10.8, 7.11.5, 7.12.5, 7.13.4, 8.0.2, 8.1.1, and 8.2.0, authentication vulnerabilities exist in Rocket.Chat's enterprise DDP Streamer service. The Account.login method exposed through the DDP Streamer does not enforce Two-Factor Authentication (2FA) or validate user account status (deactivated users can still login), despite these checks being mandatory in the standard Meteor login flow. This issue has been patched in versions 7.10.8, 7.11.5, 7.12.5, 7.13.4, 8.0.2, 8.1.1, and 8.2.0.

Vulnerability class: Broken Authentication

EPSS: 0.003 (25.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Rocket.chat — versions 8.2.0
Rocketchat Rocket.chat — versions < 7.10.8, < 7.11.5, < 7.12.5

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2026-30831?: CVE-2026-30831 is a critical-severity vulnerability in Rocket.chat, classified under Improper Authentication. CVSS score: 9.8/10. Published 2026-03-06.
How severe is CVE-2026-30831?: Critical severity. CVSS v3 base score is 9.8 out of 10.