SB2020061951 - Input validation error in Mattermost, Mattermost Server
Published: June 19, 2020 Updated: August 8, 2020
Security Bulletin ID
SB2020061951
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2017-18892)
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.
Remediation
Install update from vendor's website.