Information disclosure in Mattermost Server - CVE-2018-21260
Published: June 19, 2020 / Updated: July 17, 2020
Vulnerability identifier: #VU30229
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-21260
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote privileged user to gain access to sensitive information.
An issue was discovered in Mattermost Server before 4.8.1, 4.7.4, and 4.6.3. WebSocket events were accidentally sent during certain user-management operations, violating user privacy.
Affected software
Mattermost Server
How to mitigate CVE-2018-21260
Install update from vendor's website.
Mattermost Server - update to 4.8.1