GitHub Advisoryadvisory · Go

GHSA-7cr3-38jm-6p45 Mattermost has a Missing Authorization vulnerability

MEDIUM Published 2025-10-16 Modified 2025-10-16 Official page ↗
Aliases
CVE-2025-41443
Ecosystem
Go
Packages
github.com/mattermost/mattermost/server/v8, github.com/mattermost/mattermost-server
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weaknesses
CWE-862
Reviewed
2025-10-16

Affected packages

• Go github.com/mattermost/mattermost/server/v8: < 8.0.0-20250822090405-e8c7e7d0252b → fixed in 8.0.0-20250822090405-e8c7e7d0252b • Go github.com/mattermost/mattermost-server: >= 10.5.0, < 10.5.11 → fixed in 10.5.11 • Go github.com/mattermost/mattermost-server: >= 10.11.0, < 10.11.3 → fixed in 10.11.3

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

Related

Alias · CVE (1)

  • CVE-2025-41443 Mattermost versions 10.5.x <= 10.5.12, 10.11.x <= 10.11.2 fail to properly validate guest user permissions when accessing channel… vulnerability

Weakness · CWE (1)

  • CWE-862 Missing Authorization weakness

References