Input validation error in Mattermost Server - CVE-2017-18892
Published: June 19, 2020 / Updated: August 8, 2020
Vulnerability identifier: #VU34210
CSH Severity: Medium
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-18892
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 read and manipulate data.
An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. E-mail templates can have a field in which HTML content is not neutralized.
Affected software
Mattermost Server
How to mitigate CVE-2017-18892
Install update from vendor's website.
Mattermost Server - update to 4.1.1