GitHub Advisoryadvisory · Go

GHSA-j6gg-r5jc-47cm Mattermost fails to properly restrict access to archived channel search API

MEDIUM Published 2025-11-14 Modified 2025-11-14 Official page ↗
Aliases
CVE-2025-11776
Ecosystem
Go
Packages
github.com/mattermost/mattermost/server/v8, github.com/mattermost/mattermost, github.com/mattermost/mattermost-server, github.com/mattermost/mattermost-server/v5, github.com/mattermost/mattermost-server/v6
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
2025-11-14

Affected packages

• Go github.com/mattermost/mattermost/server/v8: < 8.0.0-20250815165020-c8d66301415d → fixed in 8.0.0-20250815165020-c8d66301415d • Go github.com/mattermost/mattermost: < 5.3.2-0.20250815165020-c8d66301415d → fixed in 5.3.2-0.20250815165020-c8d66301415d • Go github.com/mattermost/mattermost-server: < 5.3.2-0.20250815165020-c8d66301415d → fixed in 5.3.2-0.20250815165020-c8d66301415d • Go github.com/mattermost/mattermost-server/v5: < 5.3.2-0.20250815165020-c8d66301415d → fixed in 5.3.2-0.20250815165020-c8d66301415d • Go github.com/mattermost/mattermost-server/v6: < 5.3.2-0.20250815165020-c8d66301415d → fixed in 5.3.2-0.20250815165020-c8d66301415d

Description

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

Related

Alias · CVE (1)

  • CVE-2025-11776 Mattermost versions <11 fail to properly restrict access to archived channel search API which allows guest users to discover archived… vulnerability

Weakness · CWE (1)

  • CWE-863 Incorrect Authorization weakness

References