CVE-2024-11599

Domain Restriction Bypass on Registration

Published Nov 28, 2024 CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed

Description

Mattermost versions 10.0.x <= 10.0.1, 10.1.x <= 10.1.1, 9.11.x <= 9.11.3, 9.5.x <= 9.5.11 fail to properly validate email addresses which allows an unauthenticated user to bypass email domain restrictions via carefully crafted input on email registration.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Mattermost

unaffected

Version	Status	Constraints
`10.0.0`	affected	≤ 10.0.1
`10.1.0`	affected	≤ 10.1.1
`9.11.0`	affected	≤ 9.11.3
`9.5.0`	affected	≤ 9.5.11
`10.2.0`	unaffected	—
`10.0.2`	unaffected	—
`10.1.2`	unaffected	—
`9.11.4`	unaffected	—
`9.5.12`	unaffected	—

Configuration 1 [-]

OR	cpe:2.3:a:mattermost:mattermost_server::::::::
	cpe:2.3:a:mattermost:mattermost_server::::::::
	cpe:2.3:a:mattermost:mattermost_server::::::::
	cpe:2.3:a:mattermost:mattermost_server::::::::

No data.

No data available yet.

Remediation

Vendor Solution

Update Mattermost to versions 10.2.0, 10.0.2, 10.1.2, 9.11.4, 9.5.12 or higher.

Tracking

Advisories

Source	ID	Title
EUVD	EUVD-2024-34064	Mattermost versions 10.0.x <= 10.0.1, 10.1.x <= 10.1.1, 9.11.x <= 9.11.3, 9.5.x <= 9.5.11 fail to properly validate email addresses which allows an unauthenticated user to bypass email domain restrictions via carefully crafted input on email registration.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.468% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact partial

References

Link	Providers
https://mattermost.com/security-updates

History

Oct 1, 2025 6:30 PM First appearance in the feed. Affected versions updated. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Mattermost mattermost Server
CPEs		cpe:2.3:a:mattermost:mattermost_server::::::::
Vendors & Products		Mattermost mattermost Server

Nov 29, 2024 8:15 PM First appearance in the feed. Affected versions updated. Affected vendors updated. Scoring metrics updated View changes

Type	Values Removed	Values Added
First Time appeared		Mattermost Mattermost mattermost
CPEs		cpe:2.3:a:mattermost:mattermost::::::::
Vendors & Products		Mattermost Mattermost mattermost
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Nov 28, 2024 10:00 AM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		Mattermost versions 10.0.x <= 10.0.1, 10.1.x <= 10.1.1, 9.11.x <= 9.11.3, 9.5.x <= 9.5.11 fail to properly validate email addresses which allows an unauthenticated user to bypass email domain restrictions via carefully crafted input on email registration.
Title		Domain Restriction Bypass on Registration
Weaknesses		CWE-754
References		https://mattermost.com/security-updates
Metrics		cvssV3_1 `{'score': 8.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N'}`