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 ser…

Vulnerability class: Broken Authentication

EPSS: 0.003 (24.9th 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.