Description
Mattermost versions 10.11.x <= 10.11.10 fail to validate user's authentication method when processing account auth type switch which allows an authenticated attacker to change account password without confirmation via falsely claiming a different auth provider.. Mattermost Advisory ID: MMSA-2026-00583
References (1)
Core 1
Core References
Scores
CVSS v3
3.1
EPSS
0.0015
EPSS Percentile
4.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-863
Status
published
Products (6)
mattermost/mattermost
0 - 8.0.0-20260127144908-ced9a56e3988Go
Mattermost/Mattermost
10.11.0 - 10.11.10
Mattermost/Mattermost
10.11.11
Mattermost/Mattermost
11.4.0
mattermost/mattermost-server
0 - 5.3.2-0.20260127144908-ced9a56e3988Go
mattermost/mattermost_server
10.11.0 - 10.11.11
Published
Mar 16, 2026
Tracked Since
Mar 16, 2026