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Mattermost EUVDEUVD-2025-18094

| CVE-2025-4128 LOW
Incorrect Authorization (CWE-863)
2025-06-11 responsibledisclosure@mattermost.com GHSA-jwhw-xf5v-qgxc
3.1
CVSS 3.1 · NVD

Severity by source

NVD PRIMARY
3.1 LOW
AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Lifecycle Timeline

4
Patch released
Mar 31, 2026 - 21:13 nvd
Patch available
EUVD ID Assigned
Mar 14, 2026 - 21:09 euvd
EUVD-2025-18094
Analysis Generated
Mar 14, 2026 - 21:09 vuln.today
CVE Published
Jun 11, 2025 - 11:15 nvd
LOW 3.1

DescriptionCVE.org

Mattermost versions 10.5.x <= 10.5.4, 9.11.x <= 9.11.13 fail to properly restrict API access to team information, allowing guest users to bypass permissions and view information about public teams they are not members of via a direct API call to /api/v4/teams/{team_id}.

Analysis

Mattermost versions 10.5.x <= 10.5.4, 9.11.x <= 9.11.13 fail to properly restrict API access to team information, allowing guest users to bypass permissions and view information about public teams they are not members of via a direct API call to /api/v4/teams/{team_id}.

Technical ContextAI

This vulnerability is classified as Incorrect Authorization (CWE-863).

RemediationAI

Monitor vendor advisories for patches. Apply mitigations such as network segmentation, access restrictions, and monitoring.

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Vendor StatusVendor

Debian

Bug #823556
mattermost-server
Release Status Fixed Version Urgency
open - -

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EUVD-2025-18094 vulnerability details – vuln.today

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