What is the severity of CVE-2019-20888?

CVE-2019-20888 is classified as a denial of service vulnerability that can lead to memory consumption issues in Mattermost Server.

How do I fix CVE-2019-20888?

To fix CVE-2019-20888, upgrade Mattermost Server to version 5.7 or higher.

Which versions of Mattermost Server are affected by CVE-2019-20888?

CVE-2019-20888 affects Mattermost Server versions prior to 5.7, including versions 5.6.3, 5.5.2, and 4.10.5.

What are the potential impacts of CVE-2019-20888?

CVE-2019-20888 allows attackers to generate excessive memory usage, ultimately leading to service disruptions.

Is CVE-2019-20888 related to webhooks or commands?

Yes, CVE-2019-20888 can be exploited through outgoing webhooks or slash command integrations.

Vulnerability/
CVE-2019-20888

high

7.5

CWE

401

19/6/2020

5/8/2024

CVE-2019-20888

First published: Fri Jun 19 2020(Updated: )

An issue was discovered in Mattermost Server before 5.7, 5.6.3, 5.5.2, and 4.10.5. It allows attackers to cause a denial of service (memory consumption) via an outgoing webhook or a slash command integration.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Mattermost	<4.10.5
Mattermost	>=5.5.0<5.5.2
Mattermost	>=5.6.0<5.6.3
Mattermost	=5.7.0-rc1
Mattermost	=5.7.0-rc2
Mattermost	=5.7.0-rc3
Mattermost	=5.7.0-rc4
Mattermost	=5.7.0-rc5
Mattermost	=5.7.0-rc6

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Reference Links

https://mattermost.com/security-updates/

Frequently Asked Questions

What is the severity of CVE-2019-20888?
CVE-2019-20888 is classified as a denial of service vulnerability that can lead to memory consumption issues in Mattermost Server.
How do I fix CVE-2019-20888?
To fix CVE-2019-20888, upgrade Mattermost Server to version 5.7 or higher.
Which versions of Mattermost Server are affected by CVE-2019-20888?
CVE-2019-20888 affects Mattermost Server versions prior to 5.7, including versions 5.6.3, 5.5.2, and 4.10.5.
What are the potential impacts of CVE-2019-20888?
CVE-2019-20888 allows attackers to generate excessive memory usage, ultimately leading to service disruptions.
Is CVE-2019-20888 related to webhooks or commands?
Yes, CVE-2019-20888 can be exploited through outgoing webhooks or slash command integrations.

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version/mattermost/5.7.0-rc5
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