CVE-2025-11776

Mattermost versions <11 fail to properly restrict access to archived channel search API which allows guest users to discover archived public channels via the `/api/v4/teams/{team_id}/channels/search_archived` endpoint

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://mattermost.com/security-updates	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*

History

19 Oct 2026, 13:10

Type	Values Removed	Values Added
Summary		(es) Las versiones de Mattermost menor que 11 no restringen adecuadamente el acceso a la API de búsqueda de canales archivados, lo que permite a los usuarios invitados descubrir canales públicos archivados a través del endpoint '/api/v4/teams/{team_id}/channels/search_archived'

Information

Published : 2025-11-14 08:15

Updated : 2026-10-19 13:10

NVD link : CVE-2025-11776

Mitre link : CVE-2025-11776

CVE.ORG link : CVE-2025-11776

JSON object : View

Products Affected

mattermost

mattermost_server

CWE

CWE-863

Incorrect Authorization

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