Input validation error in Mattermost Server - CVE-2019-20860
Published: June 19, 2020 / Updated: August 8, 2020
Vulnerability identifier: #VU34239
CSH Severity: Medium
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-20860
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
An issue was discovered in Mattermost Server before 5.14.0, 5.13.3, 5.12.6, and 5.9.4. It allows remote attackers to cause a denial of service (application hang) via a crafted SVG document.
Affected software
Mattermost Server
How to mitigate CVE-2019-20860
Install update from vendor's website.
Mattermost Server - update to 5.13.3