Description
Mattermost versions 10.5.x <= 10.5.7, 9.11.x <= 9.11.16 fail to negotiate a new token when accepting the invite which allows a user that intercepts both invite and password to send synchronization payloads to the server that originally created the invite via the REST API.
References (1)
Scores
CVSS v3
2.2
EPSS
0.0004
EPSS Percentile
13.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-522
Status
published
Products (3)
mattermost/mattermost
0 - 8.0.0-20250612074655-8f8612c63783Go
mattermost/mattermost-server
10.5.0 - 10.5.8Go
mattermost/mattermost_server
9.11.0 - 9.11.17
Published
Jul 18, 2025
Tracked Since
Feb 18, 2026