Improper Privilege Management in Mattermost Server - CVE-2019-20859
Published: June 19, 2020 / Updated: July 17, 2020
Vulnerability identifier: #VU30248
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-20859
CWE-ID: CWE-269
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
An issue was discovered in Mattermost Server before 5.15.0. Login access control can be bypassed via crafted input.
Affected software
Mattermost Server
How to mitigate CVE-2019-20859
Install update from vendor's website.
Mattermost Server - update to 5.8.1