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CVE-2025-11776
Good to know:
Date: November 14, 2025
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
Severity Score
Related Resources (6)
Severity Score
Weakness Type (CWE)
Incorrect Authorization
CWE-863Top Fix
Upgrade Version
Upgrade to version github.com/mattermost/mattermost/server/v8 - v8.0.0-20250815165020-c8d66301415d
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | NETWORK |
| Attack Complexity (AC): | LOW |
| Privileges Required (PR): | LOW |
| User Interaction (UI): | NONE |
| Scope (S): | UNCHANGED |
| Confidentiality (C): | LOW |
| Integrity (I): | NONE |
| Availability (A): | NONE |