CVE-2026-6345

MEDIUM CVSS 6.5 View on NVD ↗

Description

Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail prevent disclosure of created user password which allows a malicious attacker to impersonate a user via the use of some of those passwords.. Mattermost Advisory ID: MMSA-2026-00614

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Affected Products

mattermost/mattermost_server

References

https://mattermost.com/security-updates

Published: May 18, 2026 09:16 UTC Modified: May 18, 2026 19:05 UTC