Description
Mattermost versions 9.11.x <= 9.11.6, 10.4.x <= 10.4.1 fail to invalidate all active sessions when converting a user to a bot, with allows the converted user to escalate their privileges depending on the permissions granted to the bot.
References (1)
Scores
CVSS v3
3.1
EPSS
0.0017
EPSS Percentile
37.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-384
Status
published
Products (2)
mattermost/mattermost
0 - 8.0.0-20241217145510-faa7e4f2ea0cGo
mattermost/mattermost_server
9.11.0 - 9.11.7
Published
Feb 24, 2025
Tracked Since
Feb 18, 2026