GitHub Advisoryadvisory · Go

GHSA-h4rr-f37j-4hh7 Mattermost Incorrect Authorization vulnerability

MEDIUM Published 2025-04-16 Modified 2025-04-23 Official page ↗
Aliases
CVE-2025-27571
Ecosystem
Go
Packages
github.com/mattermost/mattermost/server/v8
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-863
Reviewed
2025-04-16

Affected packages

• Go github.com/mattermost/mattermost/server/v8: >= 10.5.0, < 10.5.2 → fixed in 10.5.2 • Go github.com/mattermost/mattermost/server/v8: >= 10.4.0, < 10.4.4 → fixed in 10.4.4 • Go github.com/mattermost/mattermost/server/v8: >= 9.11.0, < 9.11.10 → fixed in 9.11.10 • Go github.com/mattermost/mattermost/server/v8: < 8.0.0-20250314142426-c049748b8863 → fixed in 8.0.0-20250314142426-c049748b8863

Description

Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to check the "Allow Users to View Archived Channels" configuration when fetching channel metadata of a post from archived channels, which allows authenticated users to access such information when a channel is archived.

Related

Alias · CVE (1)

  • CVE-2025-27571 Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to check the "Allow Users to View Archived Channels"… vulnerability

Weakness · CWE (1)

  • CWE-863 Incorrect Authorization weakness

References