CVE-2025-41443 - Vulnerability Details - OpenCVE

Mattermost versions 10.5.x <= 10.5.10, 10.11.x <= 10.11.2 fail to properly validate guest user permissions when accessing channel information which allows guest users to discover active public channels and their metadata via the `/api/v4/teams/{team_id}/channels/ids` endpoint

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Mattermost	Mattermost Mattermost Server

Configuration 1 [-]

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

No data.

References

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

History

Tue, 21 Oct 2025 13:15:00 +0000

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

Mon, 20 Oct 2025 13:30:00 +0000

Type	Values Removed	Values Added
First Time appeared		Mattermost Mattermost mattermost
Vendors & Products		Mattermost Mattermost mattermost

Thu, 16 Oct 2025 14:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Thu, 16 Oct 2025 08:15:00 +0000

Type	Values Removed	Values Added
Description		Mattermost versions 10.5.x <= 10.5.10, 10.11.x <= 10.11.2 fail to properly validate guest user permissions when accessing channel information which allows guest users to discover active public channels and their metadata via the `/api/v4/teams/{team_id}/channels/ids` endpoint
Title		Guest user can discover active public channels
Weaknesses		CWE-862
References		https://mattermost.com/security-updates
Metrics		cvssV3_1 `{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}`

MITRE

Status: PUBLISHED

Assigner: Mattermost

Published: 2025-10-16T08:10:40.582Z

Updated: 2025-10-16T13:58:12.764Z

Reserved: 2025-09-16T08:32:57.376Z

Link: CVE-2025-41443

Vulnrichment

Updated: 2025-10-16T13:58:07.883Z

NVD

Status : Analyzed

Published: 2025-10-16T08:15:35.917

Modified: 2025-10-21T13:07:13.683

Link: CVE-2025-41443

Redhat

No data.

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