CVE-2021-37863: Input Validation
First published: Fri Dec 17 2021(Updated: )
Mattermost 6.0 and earlier fails to sufficiently validate parameters during post creation, which allows authenticated attackers to cause a client-side crash of the web application via a maliciously crafted post.
Credit: responsibledisclosure@mattermost.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mattermost Mattermost Server | <=6.0 |
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Frequently Asked Questions
What is CVE-2021-37863?
CVE-2021-37863 is a vulnerability in Mattermost 6.0 and earlier versions that allows authenticated attackers to cause a client-side crash of the web application by creating a malicious post.
How severe is CVE-2021-37863?
CVE-2021-37863 has a severity score of 5.7, which is considered medium.
How does CVE-2021-37863 impact Mattermost Server?
CVE-2021-37863 impacts Mattermost Server versions up to and including 6.0.
What can an attacker do with CVE-2021-37863?
An attacker with CVE-2021-37863 can cause a client-side crash of the Mattermost web application.
Are there any references for CVE-2021-37863?
Yes, you can find references for CVE-2021-37863 at the following URLs: https://hackerone.com/reports/1253732, https://mattermost.com/security-updates/
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