Description
An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2, when serving as an OAuth 2.0 Service Provider. There is low entropy for authorization data.
References (1)
Core 1
Core References
Vendor Advisory x_refsource_confirm
https://mattermost.com/security-updates/
Scores
CVSS v3
9.1
EPSS
0.0112
EPSS Percentile
61.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Details
CWE
CWE-331
Status
published
Products (3)
mattermost/mattermost-server
0 - 4.1.2Go
mattermost/mattermost_server
4.3.0 rc1 (4 CPE variants)
mattermost/mattermost_server
< 4.1.2
Published
Jun 19, 2020
Tracked Since
Feb 18, 2026