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BDVDB
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Vulnerabilities

CVE-2026-9162 | BDVDB-2026-341998 Detail

MattermostMattermost

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

Impact#

Per CVSS v3.1: confidentiality impact low, integrity impact none, availability impact none. Attack vector: network.

Weaknesses#

  • CWE-613 Insufficient Session Expiration

References#

Exploit#

No public exploit known

History#

  1. Version 1Record published in the CVE List.