CVEvulnerability
CVE-2026-9162
4.3 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-06-22
- Last modified
- 2026-06-23
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 4.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- Weaknesses
- CWE-613
Description
Mattermost versions 11.7.x <= 11.7.0, 11.6.x <= 11.6.2, 11.5.x <= 11.5.5, 10.11.x <= 10.11.17 fail to invalidate cached authentication state for active WebSocket connections during global session revocation, which allows a user with an existing WebSocket connection to remain authenticated and continue receiving real-time events until the cached session expires or the client reconnects.. Mattermost Advisory ID: MMSA-2026-00664
Affected configurations
• mattermost mattermost server (>= 10.11.0 < 10.11.18)
• mattermost mattermost server (>= 11.5.0 < 11.5.6)
• mattermost mattermost server (>= 11.6.0 < 11.6.3)
• mattermost mattermost server (>= 11.7.0 < 11.7.1)
Related
Weakness · not in database (1)
References
- https://mattermost.com/security-updates Vendor Advisory