CVE-2018-21260: Infoleak
First published: Fri 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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mattermost | >=4.6.0<4.6.3 | |
| Mattermost | >=4.7.0<4.7.4 | |
| Mattermost | >=4.8.0<4.8.1 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2018-21260?
CVE-2018-21260 is considered a moderate severity vulnerability due to its impact on user privacy.
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.
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.
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.
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.
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