How severe is CVE-2026-30831?

CVE-2026-30831 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-30831 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-30831?

CVE-2026-30831 primarily affects Rocket.chat. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-30831?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-30831 have an EU (EUVD) identifier?

Yes. CVE-2026-30831 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10054.

When was CVE-2026-30831 published?

CVE-2026-30831 was published on 2026-03-06 and last updated on 2026-06-17.

CVE-2026-30831

CVE-2026-30831 is a critical-severity vulnerability in Rocket.chat with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 8.0
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-10054
Weakness: CWE-287
Affected product: Rocket.chat
Published: 2026-03-06
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-30831?: CVE-2026-30831 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-30831 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-30831?: CVE-2026-30831 primarily affects Rocket.chat. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-30831?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-30831 have an EU (EUVD) identifier?: Yes. CVE-2026-30831 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10054.
When was CVE-2026-30831 published?: CVE-2026-30831 was published on 2026-03-06 and last updated on 2026-06-17.

References

https://github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-7qr6-q62g-hm63

Affected products (4)

cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*
cpe:2.3:a:rocket.chat:rocket.chat:8.2.0:rc0:*:*:*:*:*:*
cpe:2.3:a:rocket.chat:rocket.chat:8.2.0:rc1:*:*:*:*:*:*
cpe:2.3:a:rocket.chat:rocket.chat:8.2.0:rc2:*:*:*:*:*:*

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