What is the CVSS score of CVE-2026-30831?

CVE-2026-30831 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Rocket.Chat are affected by CVE-2026-30831?

Rocket.Chat deployments are exposed to critical authentication bypass vulnerabilities that allow attackers to circumvent Two-Factor Authentication and access accounts of deactivated users through the…

How to fix or mitigate CVE-2026-30831?

Within 24 hours: Inventory all Rocket.Chat deployments and document versions in use; assess whether DDP Streamer is enabled in production environments. Within 7 days: Implement network-level restrictions to limit DDP Streamer access to trusted networks only; monitor authentication logs for suspicious login patterns, particularly from deactivated accounts. Within 30 days: Upgrade to patched versions (7.10.8, 7.11.5, 7.12.5, 7.13.4, 8.0.2, 8.1.1, or 8.2.0+) as they become available; conduct forensic review of authentication logs for evidence of exploitation.

Rocket.Chat CVE-2026-30831

CRITICAL

Improper Authentication (CWE-287)

2026-03-06 security-advisories@github.com

Authentication Bypass Rocket.Chat

9.8

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:06 vuln.today

CVE Published

Mar 06, 2026 - 18:16 nvd

CRITICAL 9.8

DescriptionGitHub Advisory

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.