Servers and applications
CVE-2018-21255
An issue was discovered in Mattermost Server before 5.1. Non-members of a channel could use the Channel PATCH API to modify that channel.
- Severity
- Medium 4.3
- Published
- 19 Jun 2020
- Last changed
- 17 Jun 2026
- Added to UpHeron
- 1 Nov 2026
- Fixed in
- 5.1.0
- Sources
- NVD
Affected software
| Software | Affected versions |
|---|---|
MattermostServers and applications · cpe:a:mattermost:mattermost_server |
|