CVE-2019-20888

High

Description

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.

SeverityHigh
CVSS7.5
Exploit probability66. percentile1.1%
ProductMattermost Server
PublishedJun 19, 2020
First seenJun 19, 2020

How to fix

Update
  • mattermost mattermost_server4.10.5, 5.5.2, 5.6.3 or later

Affected products

ProductAffected versionsFixed in
mattermost mattermost_serverv < 4.10.5, 5.5.0 ≤ v < 5.5.2, 5.6.0 ≤ v < 5.6.3, 5.7.04.10.5, 5.5.2, 5.6.3

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CVE-2019-20888 · Mattermost Server · Dark Radar