Description
An issue was discovered in Mattermost Server before 5.19.0. Attackers can discover private channels via the "get channel by name" API, aka MMSA-2020-0004.
References (1)
Core 1
Core References
Vendor Advisory x_refsource_confirm
https://mattermost.com/security-updates/
Scores
CVSS v3
7.5
EPSS
0.0032
EPSS Percentile
55.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Details
Status
published
Products (1)
mattermost/mattermost_server
< 5.19.0
Published
Jun 19, 2020
Tracked Since
Feb 18, 2026