Description
An issue was discovered in Mattermost Server before 4.0.0, 3.10.2, and 3.9.2, when Single Sign-On OAuth2 is used. An attacker could claim somebody else's account.
References (1)
Core 1
Core References
Vendor Advisory x_refsource_confirm
https://mattermost.com/security-updates/
Scores
CVSS v3
8.1
EPSS
0.0021
EPSS Percentile
43.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Details
CWE
CWE-287
Status
published
Products (2)
mattermost/mattermost-server
0 - 3.9.2-0.20170714134023-b17fca0d5ee7Go
mattermost/mattermost_server
< 3.9.2
Published
Jun 19, 2020
Tracked Since
Feb 18, 2026