CVE-2026-30831Network attack vector

Account access via omitted DDP login checks

Published Mar 6, 2026 · Updated Mar 6, 2026

Authentication bypass in affected Rocket.Chat releases allows remote attackers to access accounts through the enterprise DDP Streamer. The Account.login method skips the TOTP enforcement and active-account validation performed by the standard Meteor login flow. Possession or discovery of a valid password is still required, but password spraying can bypass 2FA and deactivated accounts can regain access.

CVSS severity9.8
Critical
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in affected Rocket.Chat releases allows remote attackers to access accounts through the enterprise DDP Streamer. The Account.login method skips the TOTP enforcement and active-account validation performed by the standard Meteor login flow. Possession or discovery of a valid password is still required, but password spraying can bypass 2FA and deactivated accounts can regain access.

The record

CVE
CVE-2026-30831
Published
Mar 6, 2026
Updated
Mar 6, 2026
Vendor
Rocket.Chat Technologies Corp.
Product
Rocket.Chat
Classifications
CWE-304, CWE-287, T1110.003, T1078
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 7.10.8
  2. Affected versionversion=< 7.11.5
  3. Affected versionversion=< 7.12.5
  4. Affected versionversion=< 7.13.4
  5. Affected versionversion=< 8.0.2
  6. Affected versionversion=< 8.1.1
  7. Affected versionversion=< 8.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Rocket.Chat Technologies Corp. · Rocket.Chatversion=< 7.10.8; version=< 7.11.5; version=< 7.12.5; version=< 7.13.4; version=< 8.0.2; version=< 8.1.1; version=< 8.2.0

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.0GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-304Missing Critical Step in Authentication
CWE-287Improper Authentication
T1110.003Password Spraying
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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