CVE-2018-21260: Infoleak
Published Jun 19, 2020
·Updated
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
3 affected components
Mattermost Mattermost Server>=4.6.0<4.6.3
Mattermost Mattermost Server>=4.7.0<4.7.4
Mattermost Mattermost Server>=4.8.0<4.8.1
Event History
Jun 19, 2020
CVE Published
via MITRE·04:49 PM
Data Sourced
via MITRE·04:49 PM
Description
Frequently Asked Questions
1
What is the severity of CVE-2018-21260?
CVE-2018-21260 is considered a moderate severity vulnerability due to its impact on user privacy.
2
How do I fix CVE-2018-21260?
To fix CVE-2018-21260, you should upgrade Mattermost Server to version 4.8.1, 4.7.4, or 4.6.3.
3
What kind of user privacy violations does CVE-2018-21260 involve?
CVE-2018-21260 involves accidental WebSocket events being sent during user-management operations, exposing private information.
4
Which versions of Mattermost are affected by CVE-2018-21260?
Mattermost Server versions before 4.8.1, 4.7.4, and 4.6.3 are affected by CVE-2018-21260.
5
What actions should I take if I am using an affected version of Mattermost Server?
If using an affected version of Mattermost Server, promptly upgrade to a patched version to mitigate the privacy risk.