Input validation error in Mattermost Server - CVE-2020-14459
Published: July 2, 2020
Vulnerability identifier: #VU29473
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-14459
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can rename a channel and cause a collision with a direct message.
Affected software
Mattermost Server
How to mitigate CVE-2020-14459
Install updates from vendor's website.
Mattermost Server - update to 5.19