Description
An issue was discovered in Mattermost Server before 4.5.0, 4.4.5, 4.3.4, and 4.2.2. It allows attackers to cause a denial of service (application crash) via an @ character before a JavaScript field name.
References (1)
Core 1
Core References
Vendor Advisory x_refsource_confirm
https://mattermost.com/security-updates/
Scores
CVSS v3
7.5
EPSS
0.0042
EPSS Percentile
62.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
Status
published
Products (3)
mattermost/mattermost-server
0 - 4.2.2Go
mattermost/mattermost_server
4.5.0 rc1 (4 CPE variants)
mattermost/mattermost_server
< 4.2.2
Published
Jun 19, 2020
Tracked Since
Feb 18, 2026